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Asahi Pentax 645 Operating Manual

1. towards lower ISO Tear off the top cover of the film package indicating the type of film and speed and insert the same into the memo holder provided on the film holder The memo holder may also be utilized to jot down pertinent data by substituting a piece of paper for writing purposes 24 Professional Colar Negat iwe FNN as a 11 Pe OF It EXP EYECUP 645 Two types of eyecup a standard and another larger 1 The standard eyecup may be easily detached sized one are provided as accessories they may be from the viewfinder by rotating the cup to the utilized according to a given situation The larger is left to attach the process is simply reversed constructed of rubber and designed to fit close to 2 In attaching the larger eyecup first remove the the face for easy shooting Standard eyecup matching the eyecup pin with the fitting eyepiece hole 3 The larger eyecup should be firmly affi DIOPTER ADJUSTMENT The eyepiece is equipped with a diopter adjusting ring Accurate focusing of the viewfinder image becomes possible only with the diopter adjusting operation 1 As illustrated the diopter adjusting ring possesses a diopter adjusting index Whenever the arrow indications of and appear at the top it indicates that the ring is positioned at 1 dioptry If far sighted rotate the diopter adjusting ring in the direction of the arrow for the marking to the
2. 6 to 6400 ISO 7 Exposure compensation LCD 3 0 3 3 steps each for and 8 LCD exposure count 120 film 1 to 16 220 film 1 to 31 70mm film 1 to about 90 Film Advance Indication and Selecting Buttons 9 LED film advance indicator This LED indicator is lit during the film winding operation 10 Selecting buttons These two up front and down rear buttons are operated to select the desired photographing mode shutter speed and aperture value to adjust the film speed and to set exposure compensation Even when film is loaded in the camera it is not possible to operate mode button or selecting buttons unless the film counter is set to the frame number ready for shooting viz the first frame or subsequent 23 FILM SPEED ADJUSTMENT AND MEMO HOLDER Film speed designations are found printed upon the film packages for example indicated as ISO 100 By pressing upon the film speed button the film speed set previously will flicker in the LCD window To change the given film speed display depress the selecting button either up or down while simultaneously depressing the film speed button the film speed will change in increments of 1 3 between ISO 6 and 6400 By continuously maintaining the selecting button pressure the changes will keep on The ISO designation is identical with the ASA film speed information up button towards higher ISO down button
3. Main Switch and Shutter Release Button ask SEN KN NENNEN ENNEN ENEE NN EE KEN 20 LCD indication for exposure GOUT 21 Operation panel and LCD Window 22 23 Film speed adjustment and Memo Holder 24 25 Viewfinder display oo rerorrsroosuressereese 26 LED mode warnings in viewfinder sss erree resse 2 Eyecup 645 diopter adjustment ee 28 29 Focusing procedure recommended camera holding positong cere eee ee erresto 30 31 Switching to A auto and setting photographic mode EE 32 33 Photographic mode with the aperture set BET AN TST ET 34 Programmed AE mode EE 34 35 Aperture priority AE mode 36 37 Shutter priority AE mode 38 39 Photographic modes with the aperture set at appropriate f StOPS cece eee eee eee eee 40 Aperture priority AE mode 40 41 Metered manual mode 42 43 Utilizing 60 1 60 sec and B Bulb position 44 45 Utilizing Pentax dedicated flash units 46 47 TTL auto flash operation EE 48 External auto flash Operation cccceeseeeeeeeees 49 Dedicated flash precautions EN 50 Using ordinary flash unt 51 Programmed AE diagram meter coupling and shutter aperture coupling range 0 52 53 Exposure COMPENSATION cceeeneeeeeeeee es 54 55 Depth of field e vEKEEN SEENEN EEERESEEENEESESN ENN 56 57 Depth of field preview eceee eee ee eee e ene eee ees 58 Multiple exvpoeure En 5
4. Once the charging process has been completed do not fail to turn the flash unit s power switch to the OFF position as soon as the flash is no longer required USING ORDINARY FLASH UNITS Shutter speed ranges for flash synchronization 1 1000 1 600 Electronic flash units When using a clip on type flash unit equipped with a hot shoe bracket attach the same directly onto the hot shoe of your Pentax 645 Should a cord be required for flash camera connection utilize a synch cord to fit into the camera s X synch socket As indicated in the above table flash synchronizatin is possible at the shutter speeds from 1 60 sec through 15 secs and B It is recommended that other makes of flash units particularly dedicated types for other cameras or specific purpose types not be utilized doing so may cause malfunctions and or damage to the electronic exposure control system of the Pentax 645 speed Gen ne 1 60 1 30 1 15 1 8 1 2 1 15 B Keck Electronic flash unit eng kon MF flash bulbs M and FP flash bulbs Flash bulbs By connecting a synch cord to the X synch socket the use of an independent flash gun is possible With the MF type flash bulbs select any of the shutter speeds from 1 30 sec through 15 secs including the B position the M FP type will permit flash synchronization within the range of 1 15 sec to 15 secs and B For detailed use of flash units flash guns or flash bulbs refer
5. lens is utilized Meter Coupling and Shutter Aperture Coupling Range Meter coupling range indicates the range of subject luminance within which the built in exposure meter functions to control exposure The shutter aperture coupling range is that part of the meter coupling range within which the shutter speed and f stop can be combined for proper exposure control With the 75mm f 2 8 standard lens and ISO 100 film the meter coupling range extends from EV 3 2 8 1 sec to EV19 f 22 1 1000 In the diagram at the left the diagonal lines from the left top to lower right will move in parallel depending on the ISO rating The diagram within the frame illustrates the meter coupling and shutter aperture coupling ranges EV Exposure Value EV represents the amount of exposure by a combination of the shutter speed and lens aperture determined by the film speed and the brightness of the subject 53 SPECIAL TECHNIQUES Meter sensitivity pattern EV 54 EXPOSURE COMPENSATION Automatic exposure cameras tend to underexpose backlit subjects and to overexpose spotlighted subjects appearing on a stage etc To increase the exposure determined automatically against a bright background the 1 2 and 3 compensating controls are provided To decrease the exposure of the subject spotlighted against a dark background the 1 2 or 3 compensating controls are used The compensating controls are operated by depr
6. positioning of the camera In both positions the sockets have been specially devised to align closely with the optical axis of the lens To check the exposure data when the Cable Switch A or Cable Release is used push the Cable 8 Release halfway with your finger 60 INFRARED INDEX MARK 1 Adjust the distance scale set at the in focus point In the taking of infrared photographs using infrared film and R2 or 02 filter it will be necessary to compensate for the difference between the visible light and infrared light focus As illustrated read the camera to subject distance on the distance scale of the lens while focusing through the viewfinder turn the focusing ring until the distance setting aligns with the red infrared index marking red line The picture shows an example where the camera to subject distance is set at infinity co 2 Then move to the red infrared index mark For exposure control required in infrared photography refer to the instructions contained in the film package 61 INTERCHANGING FOCUSING SCREENS To interchange the focusing screen F S it will be necessary to first remove the lens from the camera body and turn off the main switch 1 62 As seen in the photo firmly hold the camera with the lens mount facing up and slide the focusing screen release button in the direction of the arrow using the tweezers supplied with the new focusing screen s
7. removed from the camera body or when the batteries in the grip have been depieted The life of the lithium battery is 5 years In case the mode setting and the exposure counter do not normally work for instance due to the removal attaching of the grip take the camera to an authorized Pentax service facility for replacement of the lithium battery chargeable 67 SPECIFICATIONS Type 6x 4 5 format SLR camera with Multi mode automatic exposure controls Built in motor drive Exposure Modes Programmed AE Aperture priority AE Shutter priority AE Metered manual TTL auto flash Programmed auto flash and Leaf shutter lens modes Exposure Control Mode Selection Via Mode setting buttons and Aperture ring of 645 lenses Film 120 film 15 exposures 220 film 30 exposures and 70mm roll film about 90 exposures Picture Size 56 x 41 5 mm Lens Mount Pentax 645A mount with electronical contacts Shutter Electronically controlled vertical run cloth focal plane shutter from 15 to 1 1000 sec 1 60 sec B Electro magnetic shutter release Exposure Information in Viewfinder LED indication for Lens aperture Shutter speeds and Exposure factor warning Out of meter coupling and Shutter aperture coupling range warning Flash ready signal Flash exposure confirmation signal 60 1 60 sec B bulb Leaf shutter lens LS F External Indication Liquid Crystal Displays LCD indicate Programmed AE Auto P Aperture priority AE A
8. sectional lines Intervals of both vertical and horizontal lines are 9mm It is suited particularly for the precise composing of a subject or for checking vertical or horizontal Gn lines UA 21 Microprism Matte e For general use with a microprism area of 8mm in diameter and prism angle of 6 UB 21 Split Image Matte General purpose screen possessing a prism angle of 6 When combined with a fens with a maximum aperture smaller than f 5 6 the plain matte area is utilized for focusing 63 MANUAL FILM WIND Manual film wind is possible during photographic functions in the event motorized film advance has unexpectedly halted due to a drop of battery voltage the remaining film may be manually rewound for removal Although continued photographing with the manual film wind is possible it is not recommended for doing so since the shutter speed is fixed at the 1 50 sec only 1 64 Turn the film wind knob located at the bottom of the Pentax 645 counterclockwise using a coin or a similar tool and remove it Thread the manual film wind knob into the small screw opening provided on the camera body and firmly tighten the screw knob with a coin or an appropriate tool The cap removed can be accommodated and stored in the film wind knob chamber to prevent accidental loss Should the motor stop prior to the automatic film winding operation wind the film manually by turning the knob clockwise a
9. to the operational instructions on the respective units 51 PROGRAMMED AE DIAGRAM METER COUPLING AND SHUTTER APERTURE COUPLING RANGE Out of Shutter Aperture SSS upting SS NS Meter coupling range GS SS ee ee ed SS W at Se ARTE NANNERL SR We O AANV kl TWA H VA D SNINA 500 1000 OX Qut of Shutter Aperture P PEL KL ouplingxange PS KG iN SR ES ee 1 d NE Li ba E S T Out of Meter coupling range with ISO 100 75mm f 2 8 52 Programmed AE Diagram The Pentax 645 s shutter aperture combination in the Programmed AE mode is shown in the chart The green line represents the variation of shutter speed and aperture combination with the standard 75mm f 2 8 lens w ISO 100 film Note that only the shutter speed slows down after the lens reaches its limit of 2 8 in combination with a speed of approx 1 60 sec Using a lens with a different maximum aperture the exposure program varies the aperture and the shutter speed in combination until reaching the maximum aperture of the lens in use For example with an f 4 lens the program adjusts the combination as shown by the green dotted line When using a lens with a different maximum minimum aperture or film with a different ISO film speed refer to the fine green and dotted green lines seen in the Programmed AE diagram The limit of the meter coupling range will vary if a lens other than the 75mm f 2 8 standard
10. 4 gt Fa 2 aa Ka Sep is RS at E E 8 LCD exposure count 5 LCD illumination button 7 Exposure compensation LCD 6 LCD mode indication When you practice setting photographic mode shutter speed or f stop without the film holder attach Rear Body Cap 645 in place and release the shutter once before commencing practice 22 1 3 4 5 Exposure compensation button Film speed button Mode button Exposure compensation film speed and mode selection are activated by depressing the up front or down rear selecting button while depressing one of the three mode buttons The depressing action of the button concerned will cause the LCD to flicker LED button The LED display circuit is activated by slightly depressing the shutter button When the LED is not lit by this operation depress the LED button to light the LED To turn it off depress the LED button once again LCD illumination button Should the LCD indication appear somewhat dim in a dark area the LCD window can be further illuminated by depressing the LCD illumination button to cause the indicator to become clearly visible The light will go out by repeating the button depressing action should the illumination be kept lit it will still turn off automatically in approximately 12 seconds due to the built in timer Displays in LCD Window 6 LCD mode indication Auto P 1000 to 15 F1 7 to 45 M 60 B LS 4
11. 9 Tripod support EEN 69 Infrared index mark 61 Interchanging focusing Screens ee 62 interchangeable focusing sCreemg seers ees 63 Manual film win 64 65 Elle 66 67 Gpechfcatons EE 68 69 Warranty DON EEN 70 71 DESCRIPTION OF PARTS Diopter adjusting ring Hotshoe Eyepiece Lens information contacts en X synch socket E E Ny 645 A mount R Ax P Strap lug de ef r Multi exposure ring N 5 j 622 BiN ELE Shutter cocked indicator ttm ww i E STORE ave e RAN Accessory guide hole for vertical positioning Vertical tripod socket mns EI Focusing screen release button Lens release button Film wind knob socket Focusing ring Lens alignment node Diaphragm ring Aperture auto lock button So Film advance Indicator LED button Selecting buttons Exposure compensation button Film speed button PATHI Mode button misa D C S switchen mse 7 L LCD illumination LCD window button Film type indicator Grip connecting socket Memo holder Film holder key Battery chamber Film winding knob chamber Grip lock screw External power socket Battery holder release Grip pins Preview lever Shutter release button Main switch s L K a m a kw KS Ah A Sas x DN AN Ab bh A Contacts Pressure plate Start mark BASIC PREPARATION Use six AA batteri
12. AE contro The following indication will manifest itself within the viewfinder if the given photographic situation exceeds the shutter aperture coupling range The shutter speed will appear as follows lege a oae St en flow like Lef elei E Bebe flickering If the maximum aperture f 2 8 etc appears it should be reset by moving the same toward the direction of the minimum aperture f 22 etc The process should be reversed in the similar manner when the displayed value is the minimum aperture f 22 etc by changing the aperture in the direction of maximum aperture Should the situation return to normal that is within the shutter aperture coupling range by changing the f stop the flow like flickering will cease and proper exposure is indicated and photographs may be taken in this AE mode Whenever the situation exceeds the meter coupling range for proper exposure the following shutter speed aperture value indications will appear aA Se gS flow like foe fee Fea Pi Fo flickering Please refer to the section concerning Beyond meter coupling range page 27 37 SHUTTER PRIORITY AE MODE Shutter priority AE The preselecting of a desired shutter speed will vary the aperture value automatically according to the subject s brightness Proper exposure is controlled through the camera s AE capability In addition to general photographic requirements this mode is recommended for fast moving subjects as
13. H EN TAX OPERATING MANUAL Welcome to the Fantastic World of Pentax Multi mode Photography with Medium Picture Format The Pentax 645 our latest development in the area of the medium format SLR promises a superior 6 x 4 5cm result with 120 220 or 70mm film Made possible through our vast experience and technology accumulated over the years the new multi mode 645 camera allows accurate exposure control utilizing the full range of available modes Programmed AE Aperture priority AE and Shutter priority AE Metered manual mode and TTL auto flash control The Pentax 645 is a professional camera possessing a number of highly sophisticated features a built in automated film wind along with digital indications of various photographic information through LCD Liquid Crystal Display viewed from the outside of the camera and clearly visible LED Light Emitting Diode indications within the viewfinder To obtain optimum results it is recommended that this manual be thoroughly read and understood prior to actual use of the Pentax 645 CONTENTS Description Of Darts 2 5 Inserting batteries 2 ceeeeeeeeee eee eeeeeeeeees 6 Attaching removal of Grip DD 8 9 Lens mountpg interchange ees 10 11 Attaching Shoulder Grape 12 Film Holders 645 and attaching detaching 13 Shutter release without film in camera 14 Problems and remedial solutions aen 15 16 Loadimg unloading EE 18 19 C S Switch
14. ION When using an ordinary flash unit with X synch contact select the 1 60 sec flash synchronization mode Although 1 60 sec may be used for general photography without flash there is no exposure meter indication 1 The designation 60 is displayed within the external LCD window when the shutter speed is set at 1 60 sec In the event another mode is displayed a changeover to the 60 designation is possible by depressing the selecting button up or down while simultaneously depressing the mode button Turn the main switch ON a slight depressing of the shutter 44 release button will display the LED indications of 60 and F within the viewfinder During flash photography adjust the f stop according to the camera to subject distance For further details refer to the operating in structions supplied with the flash unit When utilizing the Pentax 645 and a flash unit via a synch cord as illustrated connect the cord to the camera s X synch socket The threaded synch cord plug may be screwed into this terminal UTILIZING B BULB POSITION B Bulb The bulb position is used for time exposures requiring 15 seconds or more While the shutter release button is depressed the shutter will be open The time exposures are recommended for firework displays night scenery and or astronomical photography Swithing to the B the B display will become visible within the
15. LCD window by depressing the selecting button up while depressing the mode button at the same time With the main switch ON depress the shutter button slightly then the B and F will be Kee displayed by LED in the viewfinder When shooting at the B position it is recommended that a sturdy tripod and the Cable Switch A or a cable release available optionally be employed to prevent possible camera shake The Cable Switch A or a cable release may be easily screwed into the shutter release button Time exposures are made simple through the use of the Pentax Cable Release 50 Cable Release 30 is not recommended for use The long time exposure consumes the battery power so greatly that even fresh alkaline batteries can be exhausted in about 40 hours 45 UTILIZING PENTAX DEDICATED FLASH UNITS The compatible combination of the Pentax 645 and to the X synch socket otherwise the camera s one of the Pentax dedicated auto flash units will flash coupling capability will fail to function allow convenient use as indicated in the table A dedicated flash unit when used with the Pentax below When using the AF400T connect the unit 645 may not fire if the subject is too bright for to the hotshoe contact of the camera via the 4P flash photography synch cord B Do not attempt to couple the cord AF400T AF280T AF260Sa AF200SA FLASH COUPLING FUNCTIONS OF THE PENTAX 645 AF200T AFO80C AF160Sa AF240Z Up
16. ON and the shutter is released by depressing the shutter release button the paper leader will be automatically wound up to the first frame 15 frames can be exposed using a 120 film roll and 30 exposures with a 220 film roll e When the 6 exposure 120 film is used with your camera you can take about seven pictures And the shutter and the exposure counter LCD continue to work until about 12 exposures As shown above the exposure counter LCD indicates 1 During the shutter release operation the LCD for the exposure count will flicker at one second intervals indicating that the given frame is being exposed Thus in the case of time exposure at the B Bulb position exposure time can be accurately counted by flickering intervals When it is noted that the film winding speed slows or the motor fails to operate the batteries should be replaced at once When motor function slows extremely intermittent motor noise can be heard 21 OPERATION PANEL AND LCD WINDOW AV Aperture Value Operation panel TV Time Value A l A LED button 8 LED film advance indicator e Ay Ppt Selecting buttons up front down rear LBE s e e wf mh p Ri r 4 Wi 4 1 Wi e Se 4 Exposure compensation button A A a o P D 2 Film speed button LCD window Win A e Ki A k K A Nei e Le G oh nar f e e k CH r DR mm o e 3 Mode button
17. RIORITY AE MODE Aperture priority AE Predetermine the f stop to meet with a given photographic situation the shutter speed will automatically adjust itself and provide the proper exposure in line with the subject s brightness This method is ideally suited whenever the depth of field is considered important in general or portrait photography 1 In this mode the Auto and f stop are externally displayed in the LCD window Whenever a mode is switched from another to this particular setting the display can be made visual by depressing the selecting button either up or down land the mode button 36 simultaneously Desired selection of the f stop can be effected with the depressing of the up or down selecting button The up button should be operated when the aperture choice is toward the minimum aperture example f 22 the down button when the aperture desired is toward the maximum aperture opening f 2 8 etc A single depressing moves the value in 1 2 incremental stops while continuous f stop increments are possible by Maintaining pressure upon the selecting button 3 After turning on the main switch the LED displays of the shutter speed and f stop will visually appear within the viewfinder by a slight depressing of the shutter release button additional pressure upon the shutter will cause the same to release for shooting Visual warnings during Aperture priority
18. ag ge C WER p gee te ee oe Dh AM k tin Metered manual Proper exposure is obtained by adjusting the shutter speed and f stop according to the exposure meter indications visible in the viewfinder Utilizing this mode the photographer is able to control the exposure value over under exposure as may be required for his photographic purposes 1 When using this Metered manual mode the shutter speed is indicated in the external LCD window In switching from another mode depress the selecting button up or down while simultaneously depressing the mode button so that the manual mode M is displayed by the LCD 42 2 Select desired shutter speed by depressing the selecting button up or down After turning the main switch ON slightly depress the shutter release button the shutter speed and one of the following numerical indications 03 UK 3 will be displayed by the LED within the viewfinder Factors 03 D 3 indicate the exposure amount EV in steps 03 02 01 OK 1 2 3 OVER CORRECT UNDER For situations not covered by the 3 steps 03 or 3 indication will flicker like a flow 077 as shown in 01 03 indicates an OVER exposure Situation ftm om 15 3 tT THrr itt t PU 2218 86068 1622 A 2216 11 8 5 6 28 3 Control the aperture and or shutter speed until the Dk designation appears in the viewfinder signifying proper exposure Intenti
19. al on the back of the paper leader securely paste to prevent accidental unwinding of the exposed roll C S SWITCH MAIN SWITCH AND SHUTTER RELEASE BUTTON The Pentax 645 incorporates a motor drive unit permitting either single or consecutive shooting through the C S switch Select either the C or S position by turning the C S switch e Single frame shooting S By depressing the shutter release button a single frame is exposed and automatically wound to the next frame at which point the motor halts e Consecutive shooting IC While the shutter release button is kept depressed the frames are continuously exposed at about 1 5 frames sec Once finger pressure is released from the shutter release button the motor will halt after winding the film to the next frame 20 e Main switch and shutter release button A light pressure upon the shutter release button with the main switch turned ON will immediately activate the exposure meter causing the LED indicator to appear in the viewfinder of the camera further pressure on the button will release the shutter A timer switch has also been integrated into the exposure meter circuit and will automatically terminate power approximately 30 seconds after finger is removed from the release button Turning the main switch off during exposure will result in incorrect exposure LCD INDICATION FOR EXPOSURE COUNT The first frame automatically set Turn the main switch
20. camera any photographic mode setting or shutter speed and or f stop adjustments will not function When an A lens is not set at A the photographic modes available at A auto position will be prevented Also refer to Item 3 on the previous page Film holder exchange is not possible in mid roll When the film holder is removed from the camera in mid roll the properly exposed film may be totally damaged and the LCD exposure count display returns to the starting position no indication as D ooo A UH Can t release Can t set to Auto or P e Should dust foreign bodies or film residues 16 collect on the film holder or within the film holder chamber of the camera body they may inadvertently register photographically clean them off carefully to prevent problems Should film residue or dust collect at the contact point for film detection located on the pressure plate side of the film holder the motor will continue to rotate idly after ali remaining frames have been exposed However in approximately 30 secs the motor will stop turning When the motor stops and the ON OFF operation of the main switch is repeated the motor will again be activated in idle rotation however avoid doing this since it may cause problems with the film winding mechanism After switching off remove the film holder and clean the contact point of the pressure plate Should the film winding operation s
21. d withdraw the same out to the side The grip will Removal come away from the camera body 1 Using a coin or similar tool completely loosen the grip lock screw by turning the same in the direction opposite to the LOCK arrow designation Attaching ke Loosen the grip lock screw As indicated in the photographic illustration align grip holes on the grip with the corresponding pins on the side of the camera Push up the grip until it engages with an audible click signifying correct contact 3 Turn the grip locking screw located on the bottom in the direction of the LOCK arrow designation using a coin or a similar tool LENS MOUNTING INTERCHANGE C over these instructions since this process will be required also when lens ts already mounted 2 1 Depress the lens release button and turn the 2 To mount the lens align red dot A found on body mount cap to remove it the camera body with red dot BI on the lens unit then seat the lens mount into the camera mounting Turn clockwise until the lens locks with a click The procedure C illustrated is recommended in mounting lenses in a dimly lit area since the lens may be easily mounted by touch alone 10 3 To remove attach the lens cap depress notches at both sides inward 4 To remove the lens depress the lens release button and rotate the lens unit to the left It will come out easily 5 Following lens removal t
22. dered inoperable In such a case contact your nearest Pentax service center e Periodical performance checks at least once or twice a year are recommended to maintain your camera in good working condition If you have not used your camera over a long period of time or when important pictures are planned on an assignment a pre check of the operating parts and or trial shooting is suggested Non dedicated lenses or accessories used in conjunction with the Pentax cameras may cause malfunctions and or damage to the camera components Always use the Pentax exclusive lenses and accessories the quality of which is totally guaranteed by us It is a good practice to immediately note the lens and camera body number against possible loss Notes on the LCD Liquid Crystal Display Under high temperature conditions approximately 60 C or above the LCD window may turn black Do not be concerned it will return to normal once the temperature stabilizes Under low temperature conditions the display response time may slow down considerably These phonomena do not indicate a breakdown of the LCD s it is due to the inherent characteristic of the LCD s Notes on Reserve Battery A reserve battery CR1220 lithium battery will be placed within the bottom of the camera body at the time of delivery It supplies the required power to maintain memory for mode settings and exposure counter information etc during the period the grip has been
23. e the aperture ring to select the desired f stop Turn on the main switch a slight depressing upon the shutter release button will cause the LED indication of the shutter speed to appear in the viewfinder Additional pressure on the button will release the shutter to photograph the subject Visual warnings during aperture priority AE control In the event light levels exceeds the shutter aperture coupling range the shutter speed within the viewfinder will be displayed in the following manner e cenit e e flow like S ZE fe flickering Should the maximum aperture be indicated select a smaller aperture by rotating the ring toward the direction of its minimum aperture f 22 etc However if the aperture displayed is the minimum aperture f 22 etc rotate the same toward the direction of the maximum aperture f 2 8 etc When the combination reaches the shutter aperture coupling range by changing the f stop the flow like flickering in sequence will cease proper exposure has been attained and photographs can be taken safely with this AE mode Should the light level exceeds the meter coupling range the shutter speed and F indication within the viewfinder will appear as follows E flow like ecL Fb F Fa fats pre flickering Refer to page 27 Beyond the meter coupling Lange yhbasag tei eras sibbiegs Prerar 41 METERED MANUAL MODE i q why a ew Sn a D d ni D
24. ed The multi exposure ring M E will automatically return to its original position immediately after shutter releasing function When cancelling multiple exposure simply return the multi exposure ring to its former position After loading film multiple exposure should not be operated until the external LCD window exposure counter EX reads out 71 or larger Should the shutter be accidentally released in this state the motor will merely continue to run idly for about 30 seconds without winding the film In this case turn off the main switch take out the film holder once and cancel the mu ti exposure ring setting Then newly start the correct procedure Set the C S switch to S position when using the multiple exposure M E Multiple Exposures Multiple exposure operational sequence 1 Set the multi exposure ring 2 Initial photographing of the subject 3 Reset the multi exposure ring 4 Secondary photographing of desired subject By repeating the steps 3 and 4 multiple shots on a single frame are possible Exposure counter indicator will remain stationary To return to normal shooting just release the shutter without setting the multi exposure ring 59 TRIPOD SUPPORT When photographing at slower shutter speeds the use of tripod and cable release is suggested to prevent possible camera shake As illustrated the Pentax 645 has been provided with two tripod sockets for vertical and horizontal format
25. ed or an appropriate interchangeable focusing screen 645 separately available can be used Refer to P 62 for further details concerning this particular use 30 Out of focus In focus RECOMMEDED CAMERA HOLDING POSITIONS It is important that the camera be held correctly to minimize camera shake which can result in blurred pictures It is suggested that the Pentax 645 be handled for familiarization prior to actual use Basically two methods of camera holding as illustrated are recommended both involving the secure holding of the camera against the face using both hands The shutter should always be released gently a sudden depressing of the shutter may cause an accidental camera shake situation Stand with both feet firmly placed insuring a strong steady posture The left elbow should be drawn in contact with the body Utilizing a tree wall table etc to support the body and camera will help in stabilizing grip and balance during picture taking When employing a slower shutter speed or a telephoto lens it is highly recommended that a durable tripod and cable release available optionally be utilized to prevent camera shake and blurred pictures 31 SWITCHING TO A AUTO AND SETTING PHOTOGRAPHIC MODE Aperture auto A auto lock button Down button Mode button 32 Switching to A Auto To set the lens aperture ring to the A Auto position align the ring s apertu
26. es of the types mentioned below in accordance with the instructions on the battery case e Manganese batteries e Alkaline batteries e Ni Cd rechargeable batteries a charger needed New batteries are packed at the time of shioment but because of inherent self discharging performance gradually deteriorates as time goes by In such a case replace the packed batteries with brand new ones INSERTING BATTERIES GRIP 645 Prior to placing of the batteries into the grip section turn off the main switch located on the grip Then remove the battery holder by pushing battery holder release button in direction of the arrow Install six 1 5V AA batteries in accordance with the diagram located in the battery chamber Make sure proper battery polarity and is maintained Angle the batteries into the holder placing the battery onto the spring plate contact first then push the other end into position The batteries are easily removed by pressing the battery in the oval cutouts on both sides of the battery holder Precautions e Make sure that polarities of all the batteries are properly aligned Incorrect polarity alignment may cause unexpected damage to your equipment e Replace all batteries at the same time Do not mix battery brands types or old batteries with new ones e Remove batteries when not using your equipment for a long time Batteries may tend to leak if left too fong in your e
27. essing the selecting button up or down while depressing the exposure compensation button EF at the same time When depressing only the exposure compensation button EF the EF information flickers in the external LCD window When the exposure compensation is utilized the compensation index in use will be indicated on the EF display in the external LCD window The or LED flickering sign in the viewfinder above the f stop information will also be seen Return to 0 position immediately following use Exposures may be compensated automatically by adjusting the shutter speed in Aperture priority AE the f stop in Shutter priority AE and the programmed value in the Programmed AE When photographing in Metered manual mode the correct exposure sign 2 must be first obtained then compensate by adjusting the shutter speed or f stop In LS 60 and B mode exposure compensation does not work although due information is displayed 55 DEPTH OF FIELD Depth of field is the area between the nearest and farthest points which are in proper focus at a given lens aperture The depth of field increases as the aperture becomes smaller as the focal length of a lens becomes shorter or the camera to subject distance is extended further back By varying the f stop the range in focus will change accordingly allowing the creating of different photographic effects in your pictures As illustra
28. et The focusing screen will release together with the retaining frame The left lever located within the lens mount should be held down by depressing the preview lever Remove the focusing screen from the frame with the same tweezers and fit it into the groove in the case of the focusing screen to be replaced 3 Carefully place the new screen on the frame using the tweezers provided while depressing the preview lever Push the frame up utilizing the other end of the tweezers as illustrated until it snaps into position The focusing screens are made out of a special optical plastic thus careful handling is essential To clean use only a blower to blow away the dust It should be handled only with the exclusive tweezers held by the edges as illustrated INTERCHANGEABLE FOCUSING SCREENS UC 21 Split image Microprism UE 20 Plain Matte Matte e All the screen surface except for e The UC 21 focusing screen is the central spot 11mm diameter built in standard focusing device is covered by the fresnel lens and for general use the split image has been designed for the slower covers an area of 3 5mm in speed lenses with a maximum diameter while the microprism aperture smaller than f 5 6 area is 8mm in diameter situations under which microprism including a prism angle of 6 and split image areas are not clearly defined in focusing UG 20 Section line Matte e A variation of the UE 20 plain matte screen it includes
29. ff the film metering for dedicated TTL automatic electronic flashes Exposure Range From EV 3 f 2 8 at 1 sec to EV 19 f22 at 1 1000 sec with 75mm f 2 8 lens with ISO 100 film Film Speed Usable SO 6 6400 Exposure Compensation Via Exposure factor button Setting at 3 2 1 O 1 2 and 3 Depth Of Field Preview Via Preview lever when aperture set manually Power Source and Battery Life Six 1 5V AA batteries manganese alkaline or Ni Cd for exposure control display circuits and motor drive Automatically turns power off 30 seconds after removing finger from release button Power Source Manganese Battery Alkaline Battery Ni Cd Battery Approx 100 rails Approx 250 rolls Approx 100 rolls Approx 70 rolls Approx 170 rofls Approx 70 rolls 70mm Film Approx 20 rolls Approx 50 rolls Approx 20 rolls Memory Power Source One built in lithium battery for exposure data memory circuits Minimum battery life 5 years Replaced at Pentax service center Size and Weight 147 W x 109 H x 117mm D 1 320g 5 7 W x 4 3 H x 4 6 D 46 2 oz with grip and film holder without lens Accessories Large eyecup 645 Body mount cap 645 Rear body cap 645 and Strap B SPECIFICATIONS ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTIFICATION OR ANY OBLIGATION ON THE PART OF THE MANUFACTURER 69 WARRANTY POLICY All Pentax cameras purchased through authorized bona fide photographic distributi
30. found at sports events 38 1 In this mode the external LCD window will indicate Auto and shutter speed If not depress the up selecting button until the desired display appears in the window while simultaneously holding down the mode button Depress the up or down selecting button to set the required shutter speed By depressing the up button the speed is made faster the down button depressing will slow the shutter speed A single depressing will cause a single incremental change the changing process becomes continuous in increments by holding it down 3 Turn on the main switch By slightly depressing the shutter release button the shutter speed and aperture value are indicated by the LED within the viewfinder Additional pressure will cause the shutter to release thus completing exposure Visual warnings during Shutter priority AE contro The following aperture indication appears within the viewfinder whenever a given situation is beyond the shutter aperture coupling range i Son Ly ttt Se ob Sr flow like SEET IER Me Fe flickering In the event the shutter speed is found to be somewhat higher adjust the same to a slower point by setting the same in the direction of the 15 speed area When the speed is found to be slower select a higher speed by moving the same toward the 1 1000 indication Should the situation return to normal that is w
31. he front and rear mount protective caps must be fitted to prevent foreign bodies and finger marks from accidentally gathering on the lens itself Ree H oO zy Zr aL ayre w 2 E SL DL w Wy d D Note Particular care must be taken in preventing damage or staining of the electrical contact points on the mount surface of the lens A clean dry cloth should be used to immediately wipe off any grease or accidental stains 14 ATTACHING SHOULDER STRAP For carrying convenience a shoulder strap can be attached to the camera by the lugs provided 1 As illustrated release lock by depressing the lock plate of the fastner in the direction of the arrow USINg a COIN 2 Fit the strap lug into the opening of the fastner with its arrow facing out and return the locking plate to the original position It will securely attach to the strap To remove the strap depress the lock plate in the same manner and withdraw it from the lug 12 SE Fastener d To adjust the length of the strap use the strap clasp After fitting the strap and adjusting the length pull the strap hard on trial to see if the strap has securely engaged with the camera The following film holders are available depending upon your photographic requirements each provided with its own exclusive case for carrying convenience and protective purposes 120 film holder For 120 film 15 frames per roll 220 film holder For 220 film 30 fra
32. ion to proceed with the servicing This warranty policy does not apply to Pentax cameras purchased in the U S A U K or Canada The local warranty policies available from Pentax distributors in those countries supersede this warranty policy 71 72 FOR YOUR MEMO 56870 ENG Asahi Optical Co Ltd 11 1 Nagata cho 1 chome Chiyoda ku Tokyo 100 JAPAN Pentax Europe n v Weiveldiaan 3 5 1930 Zaventem BELGIUM Pentax Handelsgesellschaft mbH Julius Vosseler Strasse 104 2000 Hamburg 54 GERMANY Pentax U K Limited Pentax House South Hil Avenue South Harrow Middlesex HA2 OLT UK Pentax France Z I Argenteuil 12 rue Ambroise Croizat 95106 Argenteuil FRANCE Pentax Benelux for Netherlands Spinveld 25 4815 HR Breda NETHERLANDS for Belgium amp Luxemburg Weiveldlaan 3 5 1930 Zaventem BELGIUM Pentax Schweiz AG Industriestrasse 2 8305 Dietlikon SWITZERLAND Pentax Scandinavia AB Falhagsleden 57 75127 Uppsala SWEDEN Pentax Corporation 35 Inverness Drive East Englewood Colorado 80112 U S A Pentax Canada Inc 3131 Universal Drive Mississauga Ontario L4X 2E5 CANADA Asahi Optical Brasileira Ind e Com Lida Rua Estados Unidos 1053 Sao Paulo BRAZIL
33. ithin the shutter aperture coupling range by changing the shutter speed the flow like flickering in sequence will cease proper exposure is indicated and photographs may be taken in this AE mode Whenever a given photographic situation exceeds the meter coupling range the shutter speed and aperture value within the viewfinder appear as follows DREI bes Si IGT Zen flow like B See as fae flickering Refer to page 27 Beyond the meter coupling Lange e 39 PHOTOGRAPHIC MODES WITH THE APERTURE SET AT APPROPRIATE f STOPS 40 Aperture Priority AE mode Metered manual mode 60 1 60 sec fixed B Bulb 1 APERTURE PRIORITY AE MODE Aperture priority AE a W I x het wt gt Aap SE F D Ah st ide fk Po OP e i A A kl 108 8 a The Aperture priority AE control is possible by adjusting the aperture ring to any of the f stops other than the A position This method requires the presetting of the desired f stop depending upon the subject brightness the shutter speed is automatically controlled for proper exposure 1 Inthe Aperture priority AE mode with the f stop presetted not displayed the external LCD window will indicate Auto and F To effect a switchover to this mode from another depress the selecting button U down 1 while also depressing the mode button to allow the LCD of this mode to appear within the window _ Rotat
34. lash units TTL and the Programmed auto flash units the e marking on the viewfinder s LED display will be lit or will flicker immediately following flash discharge which indicates auto flash confirmation Its appearance assures that proper flash exposure has been rendered to the subject Flash coupling range to activate the auto flash confirmation mark may vary depending upon certain limitations according to the subject situation With the AF200T the auto flash confirmation is also signified by an audible buzzing 50 DEDICATED FLASH PRECAUTIONS e When setting the flash mode selector to MS Manual synch or to the M Manual position utilizing a dedicated auto flash unit adjust the aperture to the respective f stops The same procedure must apply to multiple flash operation Setting to the A position will not provide proper exposure The functions of the MS or M may vary depending upon the type of dedicated auto flash unit in use It is recommended that the flash unit instructions be read and followed for optimum results e TTL and external auto flash operation is possible at 60 1 60 sec fixed or B When the shutter speed has been set at the B position the B shutter speed will not switchover to that of flash synchronization even when flash charging has been completed e Should the power switch of a dedicated flash unit be kept ON the power source timer for the camera s exposure meter will be kept turned ON
35. left side However should you be near sighted the diopter adjusting ring must be rotated for the marking to the right side ep CDN i DNA tts LOUTH rai ae It is recommended that the diopter ring adjustment be performed prior to a shooting session to fit with your visual requirements avoiding adjustments during picture taking _ To adjust diopter as illustrated direct the camera to face a bright plain color background then rotate the diopter adjusting ring to a point whereby the border line of the microprism and matte field can be seen most clearly Adjusting is generally made easier when the focusing screen image is blurred or out of focus 29 FOCUSING PROCEDURE View the subject through the viewfinder and rotate the focusing ring of the lens Focusing is possible in three ways using split image microprism and or matte field With the split image method the focusing ring should be rotated until the upper and lower image halves are perfectly aligned When using the microprism collar control focusing until glitter vanishes within the collar area In the case of the matte surface focusing should be adjusted until the image becomes sharp and crisp At times when the maximum aperture of the lens in use is limited in f stop capability less than f 5 6 example f 8 the split image or microprism collar may not render a satisfactory focusing view In this event the use of the matte field is recommend
36. ly one that can be used with the AFO80C Ring Light Use the 58 gt 49mm Adapter Ring to fit the flash on the lens When combined with a Pentax dedicated auto flash AF400T AF280T AF200T or AF200SA a predetermined f stop is automatically set should the aperture ring be set at the A position The completion of flash charging will automatically switch the shutter speed to 1 60 sec The 4 indication appears in the external LCD window and the viewfinder LED indicating that the charging has been completed Aperture set to A Programmed AE Aperture priority AE or shutter priority AE Adjust the flash mode selector of the AF200T AF280T or AF400T to the auto position red green or yellow Simultaneously with the completion of the charging the viewfinder LED display indicates 1 60 sec According to the auto positions red green or yellow the f stop automatically varies as shown in the table below f 4 with AF200SA with ISO 100 film AF400T Red 2 8 F 4 f 4 Green f 5 6 f 8 f 8 Yellow f 11 With ISO 100 film PROGRAMMED AUTO FLASH OPERATION Example Should the selector of the AF200T be positioned at the red indication ISO 100 film the aperture automatically adjusts to f 2 8 As the film speed changes the f stop automatically changes however the maximum flash to subject distance remains unchanged Also refer to your flash unit operation manual Aperture
37. mes per roll 70mm film holder For 70mm film approx 90 frames per roll Attaching detaching of 120 220 film holders When inserting the film holder into the camera body be careful not to make its upside down to avoid any serious damage Align the red dots on the film holder and film holder key as shown then insert the film holder into the camera chamber Make sure that two tabs FILM HOLDERS 645 AND ATTACHING DETACHING 2 lock in place with a film click when the film holder is inserted _ Lock it by rotating the film holder key 90 to the right while simultaneously depressing the key After locking the film holder key should be folded into its original position Raise the film holder key and rotate until the red dot markings are aligned Continue to rotate the key counterclockwise up to the end of the red line the locking mechanism will release with an audible click permitting the film holder to be removed from the camera body Refer to the 70mm film holder operating manual for its use SHUTTER RELEASE WITHOUT FILM IN CAMERA tm Dio R g tt oi To release the shutter without film in the camera remove the film holder or fix the rear body cap The lens can be removed without affecting shutter release operation However such operation is not possible if the film holder without film is attached 1 When releasing the shutter without the film holder turn the main switch ON a
38. n is 1000 1 1000 sec or F22 the down button will stop at its lowest point of 15 15 sec or F 2 8 The f stop will be displayed within the aperture range of the lens in use Aperture set to the A auto position Late _nriori up Shutter priority AE Eech NE re Aperture priority AE Gam e down button Displayed f stop or shutter speed indicates the numerical value automatically set at the time within the camera s exposure control circuitry Aperture set to each f stop and also at the time of blank exposures Programmed AE 8 B Bulb up t button 60 1 60 sec fixed R Metered manual sa as down Aperture priority AE button Only M 1000 60 or B functions when releasing the shutter without a film holder 33 PHOTOGRAPHIC MODES WITH THE APERTURE SET AT A AUTO Programmed AE mode Aperture priority AE mode Shutter priority AE mode 34 PROGRAMMED AE MODE Al wy amp G L e t 4 K D AA T Ae 4 ie rg see ee ai Programmed AE The Pentax 645 has been designed to control the f stop and the shuter speed which automatically vary at the same time depending upon the subject s brightness thus is able to determine the proper exposure This feature is ideally suited for those who favour spontaneous or candid photography 1 With the Programmed AE mode Auto and P are displayed
39. nd then press the shutter button to operate the shutter Be sure to set the C S Switch to S Setting it to C may cause erroneous operation and or functional problems Avoid releasing the shutter with the pin indicated in the photo by the mark being pressed which may cause erroneous operations and or functional problems With the film holder removed the available shutter speed is 1 1000 sec only if the aperture ring is set to A auto Meanwhile when the aperture is shifted to any of respective f stops the shutter can be operated at 1 1000 sec 1 60 sec or B bulb For details see the pages 32 and 33 When Rear Body Cap 645 is attached in place of the film holder removed release the shutter once Then the selection of each photographic made shutter speed and f stop will become possible PROBLEMS AND REMEDIAL SOLUTIONS e Under thg following conditions the shutter release action will not be possible even though the shutter release button is depressed 1 Main switch is not turned ON 2 Batteries in the grip are depleted no batteries in the glip or the batteries incorrectly loaded 3 Film holder without a film has been installed in the camera s film chamber 4 The available film frames have been completely exposed 5 During photographic operations Should the exposure counter not register 1 or should a non A lens be used even if the film be loaded in the
40. ngth of time before your camera can be returned to you owing to the complicated customs procedures required in Japan in importing and re exporting photographic equipment If your camera is covered by warranty repairs will be made and parts replaced free of charge and your camera will be returned to you upon completion of servicing If your camera is not covered by warranty regular charges of the manufacturer or of its representatives will apply Shipping charges are to be borne by the owner If your Pentax camera was purchased outside of the country where you wish to have serviced during the warranty period regular handling and servicing fees may be charged by the manufacturer s representative in that country Notwithstanding this your Pentax camera returned to the manufacturer will be serviced free of charge according to this procedure and warranty policy In any case however shipping charges and customs clearance fees are to be borne by the owner To prove the date of your purchase when required please keep the receipts or bills covering the purchase of your camera for at least a year Before sending your camera for servicing please make sure that you are sending it to the manufacturer s authorized representatives or their approved repair shops unless you are sending it directly to the manufacturer Always obtain a quotation of the service charge and only after you accept the quoted service charge instruct the service stat
41. on channels are guaranteed against defects of material or workmanship for a period of twelve months from date of purchase Service will be rendered and defective parts will be replaced without cost to you within that period provided your camera has not been abused altered or operated contrary to instruction Because the tolerances quality and design compatibility of lenses other than Pentax lenses are beyond our control damage caused by use of such lenses will not be covered by this warranty policy The manufacturer or its authorized representatives shall not be liable for any repair of alterations except those made with its written consent and shall not be liable for damages from delay or loss of use or from other indirect or consequential damages of any kind whether caused by defective material or workmanship or otherwise and it is expressly agreed that the liability of the manufacturer or its representatives under all guarantees or warranties whether expressed or implied is strictly limited to the replacement of parts as hereinbefore provided 70 PROCEDURE DURING 12 MONTH WARRANTY PERIOD Any Pentax camera which proves defective during the 12 month warranty period should be returned to the dealer from whom you purchased your camera or to the manufacturer If there is no representative of the manufacturer in your country send your camera to the manufacturer with postage prepaid In this case it will take a con siderable le
42. on completion of charging wilt be displayed in the external ae LCD display window and on the viewfinder LED display With any photographic mode the shutter speed is automatically switched to the synchronized speed of x setting 1 60 sec upon completion of charging When using an ordinary flash unit other than the dedicated TTL auto flash units the aperture ring should be set to an appropriate f stop other than the A positioning Oooo aaa Ea m if the aperture ring of the A tens is set to the A position the 645 s ae flash coupling function automatically switches the aperture to the necessary f stop to enable TTL auto flash control Whenever the auto flash unit has emitted an appropriate luminosity a visual marking will light up or blink in the viewfinder _ immediately after flash discharge With the use of a dedicated TTL auto flash unit the flash luminosity may be automatically controlled by the measuring of the light volume reflected off the film plane while photographing When the Metered manual mode is used synchronized flash photography is possible at shutter speed at 1 60 sec or lower indicates Pentax dedicated TTL flashes 46 AF200Sa AF280T AF200T AF080C PENTAX AF400 T 47 TTL AUTO FLASH OPERATION TTL auto flash unit As illustrated the light entering through the taking lens strikes the film plane a separate exclusive ph
43. on the external LCD window The camera mode can be switched to the Programmed AE by depressing the selecting button down while simultaneously depressing the mode button this action will show Auto and P indications within the window _ After turning on the main switch a slight depressing upon the shutter release will reveal in the viewfinderLED the shutter speed and f stop automatically programmed by the camera circuit Additional pressure will release the shutter enabling photographing Visual warnings during Programmed AE control While utilizing this mode and should the shutter speed and f stop combination fall beyond the meter coupling range the LED in the viewfinder will display the following indications attempting to photograph the subject under these situations will result in an improper exposure ai ag eg flow lke flickering a a In this particular instance the subject brightness is over the maximum range or the given situation exceeds the meter coupling range of the Programmed AE mode It may be remedied by either using a slower speed film or employing an ND filter available on the market Ga gt ee flow like flickering in this instance the subject s brightness is extremely low beyond the meter coupling range of the Programmed AE mode It may be corrected through the use of a higher speed film or by supplementing with a flash other artificial lighting unit s 35 APERTURE P
44. onal over exposure or under exposure for special effects to enhance the photographic subject is possible by adjusting the exposure within the range of the 3 steps Then having completed your own exposure determination release the shutter to take the photograph Visual warnings during Metered manual mode Excessive over under exposure will be indicated in the viewfinder in the following manner Tv E Aas J mt flow like oJ ae 3 flickering The flickering of 03 in sequence indicates that the exposure will render an over exposure exceeding 3 steps that of 3 an under exposure exceeding 3 steps Adjust either the shutter speed towards 1 1000 or rotate the aperture ring in the direction of the minimum aperture F22 When an under exposure indication appears set the shutter at a slower speed toward the direction of 15 or change the f stop by rotating the ring in the direction of the maximum aperture f 2 8 etc Once the exposure amount display falls within the range of 3 steps the flow like flickering in sequence will cease photographing may then be commenced if the photographic situation exceeds the meter coupling range the following display will appear egenen DAAT Ss l wtdi Sa abat Sp o flow like od 2 od 7 EG flickering Refer to the section Beyond the meter coupling range on page 27 DANI Preys 2 was S 43 UTILIZING 60 1 60 sec POSIT
45. oto sensor registers the light reflected off the film plane and flash luminosity thereby is automaically controlled Since only the light reflected from the subject is used for measuring purposes an accurate exposure is obtained All available f stops on the lens may be also used for TTL auto flash control although there are some limitations regarding the flash to subject distance for each preset f stop Completion of flash charging automatically adjusts the shutter speed to the flash synchronization speed of 1 60 sec The e marking will appear in both windows to signify the completion of flash charging 48 Aperture set to respective f stops either in Aperture priority AE or Metered manual mode e Set the aperture ring to desired f stop e Simultaneously with the completion of TTL auto flash charging the viewfinder LED will indicate the flash synchronization speed of 1 60 sec Aperture set to A either in Programmed AE Aperture priority AE or Shutter priority AE e Upon completion of the flash charging process of the TTL auto flash the viewfinder LED display will indicate the flash synchronization speed of 1 60 sec and the aperture of f 4 with ISO 100 film f 8 with the AFO80C ring flash With a film of a different speed the f stop will automatically change However the maximum flash to subject distance will remain unchanged Refer to the operating manual of your flash unit The standard 75mm 2 8 lens is the on
46. quipment and may cause serious damage e Never throw used batteries into fire since they may explode causing unexpected damage or 3 As shown in the illustration battery holder injury to you should be inserted into the grip depressing the e Store batteries in a cool place and out of reach same will insure firm locking Confirm that the of children unit is securely locked into position e Batteries are very sensitive to cold and 4 Once batteries are properly in place within the performance tends to deteriorate at temperatures grip the LCD indicator will appear in the LCD near freezing point Performance is restored as window as illustrated Should the LCD fail to soon as batteries are brought back to room appear batteries are exhausted or are improperly temperature Keep a set of batteries in a warm inserted or the grip is not securely attached to pocket when shooting in cold weather to the body substitute if the others no longer perform well 5 Acommon battery source is used for LCD display and motor drive For battery check confirm the motor drive function which is affected earlier than that of LCD display Be sure to turn off the main switch to avoid unexpected battery drain when putting your camera into a bag ATTACHING REMOVAL OF GRIP 645 Confirm that the main switch located on the grip 2 has been turned to OFF position While simultaneously depressing the grip lock screw Carefully pull the grip down an
47. rapidly Gaseous release from insecticides such as naphthaline may also prove harmful to the camera Camera should be stored in a cool well ventilated area if at all possible e The temperature range at which your camera will continue to function properly extends from 50 C to 20 C Extremely low ternperature reduces the efficiency of the batteries Therefore the camera should be protected against low 66 temperature conditions Sudden changes of temperature will often cause condensation of moisture within or on the exterior of the camera Do not subject the camera without proper insulated protection to sudden temperature changes out into the cold outdoors from a warm room or vice versa It is suggested that the camera be placed in a vinyl bag allow a wait of approx 30 minutes for each 10 C change of temperature before removing the camera To remove dust on the lens and viewfinder glass use a blower followed by the application of a lens cleaning brush Smudges such as finger prints should be carefully wiped with a clean soft cloth moistened with a few drops of a lens cleaning solution available on the market Wipe the lens surface gently out from the center toward the edges in a spiral Never attempt to touch the reflex mirror and focusing screen lens etc with the fingers they can be scratched very easily Do not touch or handle the shutter curtains with the fingers Once immersed into water the camera will be ren
48. re A index green with index while pressing the aperture auto lock button To release the auto lock turn the ring to the desired f number except A while pressing the A lock button e Press the aperture auto lock button only when turning the ring from the A position to the largest f number f 22 in this case or vice versa The following exposure modes canbe set depend ing on the position of the aperture ring Programmed AE A auto Aperture priority AE Shutter priority AE Aperture priority AE Respective f stops Metered manual other than A 1 60 sec fixed B Bulb Setting photographic mode Depressing of the up front or down rear selecting button while simultaneously holding down the mode button as in the picture adjusts the photographic modes in the external LCD Window as shown on the right column Setting f stop and shutter speed When employing either the Aperture priority or the Shutter priority AE mode with the aperture ring set at the A auto position or when using the Metered manual mode with the aperture set to the respective f stops the selection of a f stop or shutter speed is possible by depressing one of the selecting buttons The LCD indicates an incremental change in steps by a single depressing of the selecting button and continued changes by maintaining pressure upon it The maximum point by moving the up butto
49. s shown Although an audible clicking may be discerned while winding disregard the sound and continue to wind When the red mark fully appears in the shutter cocked indicator manual film winding has been compieted with the simultaneous shutter cocking A film wind stop device has not been incorporated for the manual film winding Even when a frame has been completely wound the knob will continue to turn without engaging for the film winding shutter cocking function By turning the knob slightly counterclockwise after completing a single frame winding the shutter can be released and the reflex mirror kept at the up position The mirror will return when the film is wound manually for the next frame When you finish winding the designated number of frames of the roll by repeating the above procedure you can continuously wind without releasing the shutter till it ts completely wound up on the spool After completing film winding operation keep the film winding knob at the bottom of the camera body Notes e Should the knob be accidentally turned counterclockwise while you are winding manually light leakage on the exposed film may occur through the fine slit of the shutter curtains Precautions must be observed to avoid turning the knob in the opposite direction for this reason Avoid leaving the camera with the reflection mirror in the raised position in bright light since light leakage may occur following
50. set at a given f stop either Aperture priority AE or Metered manual mode e Adjust the selector of the auto flash unit to AUTO position red green or yellow e Set the f stop in accordance with the flash calculation guide found on the flash unit e With a dedicated auto flash unit the completion of the charging automatically adjusts the shutter speed to 1 60 sec in metered manual mode flash synch at a slower shutter speed under 1 60 sec is also possible In this case although you can set the exposure compensation button with the indication shown in the viewfinder the exposure compensation function in effect does not work Common use for TTL auto and external auto flash modes Flash synchronization at a slower speed In Metered manual mode the shutter speed in the area of 1 125 sec through 1 1000 sec will automatically switch to 60 1 60 sec with the completion of flash charging All speeds slower than 1 60 sec can be used for flash synchronization according to the requirements thus permitting flash photography with synchronization at a slower shutter speed Simultaneously with the completion of flash charging the 4 marking indication will appear in the external LCD and within the viewfinder s LED Auto flash confirmation mark sl In each of the photographic modes the auto flash confirmation marking will appear Should the flash photography take place within the flash coupling range of the TTL auto f
51. shutter release In addition directing the camera in this state toward the sun could cause the shutter curtains to scorch through the rays of the sunlight Before replacing with new batteries in the grip do not fail to remove the film winding knob else the motor driven film winding operation restored due to the battery replacement will also activate the manual film wind knob to simultaneously rotate at a rate of high speed Finger or hand injuries could result if they are in contact with the knob at the time To avoid overlapping do not release the shutter before the red marking in a full circle becomes visible in the shutter cocked indication 65 MAINTENANCE The Pentax 645 is a precision instrument Please read the following instructions concerning handiling maintenance S Do not drop or strike the camera against solid objects In the event the camera may have sustained a heavy blow or shock it is recommended that it be taken to an authorized Pentax service facility for inspection and possible repair Should the camera become drenched either by rain or water wipe off with a soft dry cloth as soon as possible When used at the beach or while boating wipe off the exposed sections as soon as possible salt air moisture damage may occur if left unattended for long e Do not leave or store the camera in a hot and humid location for example the temperature of an automobile interior during the summer tends to rise
52. ted in the pictures on the right page examples of f 2 8 and f 22 the range in focus can be easily confirmed by checking the depth of field scale on the lens and previewing through the viewfinder See page 58 56 Example 75mm F2 8 2 8 2 83 3 20m 15 3 nit tm 19 15 L i T a 22 18 84048 1622 22 16 84 46 d e 2216 11 8 5 5 28 A 2216 11 8 56 28 57 DEPTH OF FIELD PREVIEW H e A Should the lens possess an automatic diaphragm the viewfinder can be kept bright with the aperture fully opened regardless of the preset f stop When the preview lever is depressed in the direction of the arrow aperture will stop down to the preset value and the depth of field can be confirmed through the viewfinder The aperture will return to maximum when the preview lever is released The depth of field cannot be confirmed while the lens is set to A Note Exposure value measured during preview may register incorrectly While depth of field is being previewed the shutter cannot be released 58 STA A MULTIPLE EXPOSURE Setting multiple exposure is possible by pushing and simultaneously turning the multi exposure ring in the direction of the arrow When the shutter is released while in this state the first exposure is made Repeat the same for the second or third exposure so that multiple exposure can be made on the same frame only the shutter is cocked without film being advanc
53. top before all available frames have been exposed recheck the batteries in order to locate the possible cause of the problem When using accessories without information contacts set the aperture ring to the appropriate f stops with the exception of the A auto position which cannot be used under this Situation Keep it clean TC Don t change the film IN md roll BASIC OPERATION LOADING UNLOADING FILM 1 3 S LES gt ac E KS Always load or unload the film in a shady spot or 1 To transfer the emptied spool to the opposite shield the camera and film from direct sunlight with side push the spool retainer outward and the your body Insert the film and the empty take up hole of the spool should be set into the key spool into the film holder as indicated inside the holder so that both are engaged firmly The holder retainer should then be returned to its original e When exchanging the film be sure to do it with position 7 the grips batteries or power source cord for 2 A HE film IS to be positioned according to remote control operation connected with the the film marking indicated in the similar camera body If the power source connection is manner of the empty spool moving setting it done after the film exchange the camera s IS then secured with the spool retainer While loading a roll of film securely hold onto the roll to prevent the backing paper from loosening Carefull
54. uto f stop Shutter priority AE Auto shutter speed Aperture priority AE lens aperture set manually Auto E Metered 68 manual M shutter speed 60 1 60 sec B bulb Leaf shutter lens LS F Exposure factor ISO film speed Exposure count and Flash ready signal Flash Synchronization Via hotshoe X synch contact dedicated flash contacts and X synch socket X synch speed at 1 60 sec Slow shutter speed synchronization possible in Metered manual mode Viewfinder Keplerian telescopic viewfinder with Split image microprism Clear Bright Matte screen Interchangeable focusing screens available 1 Viewing area 92 vertical and 93 horizontal 0 75X magnification with 75mm lens at infinity and 1 diopter Diopter adjustment possible from 5 to 2 diopters Mirror instant return mirror Film Loading 120 and 220 films semi automatically loaded with a start mark 70mm film automatically Film Winding Automatic film winding by motor with Single Consecutive shooting modes Single 1 frame sec Consecutive approx 1 5 frames sec Film automatically stops at end of film trailer Exposure Counter LCD indication additive type automatic resetting Automatically sets shutter speed at 1 1000 sec up to first frame Exposure count does not advance in multiple exposure mode Multiple Exposure Via Multi exposure ring cancellation possible Exposure Metering Open aperture center weighted TTL metering by GPD ceils O
55. y tear off the tape holding the paper leader The black inner side of the leading paper must face outwards shooting functions work properly but the exposure counter does not automatically reset 3 Draw the leader from the film roll and insert the leader end into the take up spool s slit Slowly rotate the film winding gear by one turn in the direction of the arrow 4 Wind the leader paper upon the take up spoo until the arrow marking on the leader appears it should be aligned with the holder s start mark S red line Care must be taken so that the leader paper s arrow marking does not go far beyond the holder s red dot for you may lose the last frame s on the roll Then attach the holder to the camera body according to the holder attaching detaching instructions Refer to p 20 43 for shooting After all of the frames on the roll have been exposed remove the film holder from the camera following the attaching detaching instructions The built in motor drive unit automatically stops as soon as the last frame is exposed and wound onto the take up spool Then the LCD exposure counter displays the number which is the total exposure number of the film in use plus one For example 16 in the case of 120 film 5 Take the film holder out and you will see the exposed film wound on the take up spool 6 While firmly holding the wound film roll remove it after pushing the spool retainer out Using the paper se

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