Zorki 4K Operating Instructions
Contents
1. 1 PURPOSE ZORKI 4K is a single lens rangefinder camera intended for taking various amateur and professional pictures on black and white film The camera is provided with a shutter setting lever and a self timer and is M and X synchronized The viewfinder and the rangefinder of the camera have a common field of view and the camera eyepiece is provided with a device for adjusting it according to a particular eyesight Such a design of the viewfinder ensures perfect focusing at the moment of picture taking The lens is focused by turning its focusing ring In so doing the range finder operates automatically irrespective of the focal length of an in terchangeable lens The camera uses a new type of a take up spool to simplify the camera loading The camera accepts standard cassettes with invariable slit The camera is delivered in two variants with INDUSTAR 50 or JUPITER 8 lens Frame size mm Aia Perforated film width mm Number of frames for one loading Focal plane shutter speeds Mechanical back focal distance mm Viewfinder eyepiece magnification times Eyepiece adjustment diopters Thread of shutter button for cable release Tripod bush thread inch 2 SPECIFICATIONS 24X36 35 36 1 to 1 1000 s automatic B by band and slow shutter speed 28 8 1 15 2 5 K 3 5x0 5 1 4 Lens INDUSTAR 50 or JUPITER 8 Nominal focal length mm 50 50 Relati2. exposure counter dial 15 shutter setting lever 16 syn chronization scale index mark Fig 3 Rear view of camera with cover removed 17 range viewfinder eyepiece 18 film rewind knob 19 cassette spool guide 20 sprocket 21 take up spool 22 shutter disengaging bush 23 film track slide 10 www orphancameras com Fig 4 JUPITER 8 and INDUSTAR 50 lenses 24 ring with aperture scale 25 focusing ring with distance scale and index mark of aper ture scale 26 depth of field scale 27 aperture setting ring with index mark 28 focusing ring with aperture scale and distance scale 29 depth of field scale 30 lens mounting ring 5 PREPARING FOR PICTURE TAKING h 5 1 CAMERA LOADING Turn off the screw on the case bottom and remove the camera from the case Raise two locking clips on the camera base plate and turn them as far as they will go move the cover along its grooves and take it off the camera Place the cassette with film in the seat and put it on the cassette spool guide Pull the film end out of the cassette as long as to the camera edge insert it in the take up spool slot E that a sprocket tooth would enter a perforation ole Insert the detachable cover into the camera guide grooves and move it as far as it will go Give the locking clips half a turn till stop and then sink them into their recesses _ Set the shutter press the release button On setting the shut
3. i e when gating is full Hand controlled exposure B is not desi rable when using flash lamps since a considerable amount of stray light gets into the camera and may result in a blurred image NOTE When photographing without flash lamps the synchronization scale position may be free 19 The picture is taken with a 135 mm lens 20 www orphancameras com 6 3 LENS CHANGING The ZORKI 4K accepts all the interchangeable len ses intended for ZORKI type of cameras To change a lens set the shortest distance by the distance scale and screw the lens out of the camera by turning it counter clockwise When screwing in an interchangeable lens be sure to set it at the shortest distance as well To take pictures with interchangeble lenses viewing should be performed with the help of a universal or individual viewfinder which should be set in the camera attachment groove Interchangeable lenses are focused in the same way as the main standard one However it should be kept in mind that any chan ging of the main standard lens for another one requires additional adjusting of this lens to the camera REFERENCE TABLE of sensitivity units of different sensitometric systems for photographic materials of normal contrast y 0 8 1 0 TOCT ASA 16 20 25 32 40 50 65 80 100 130 160 200 250 320 400 500 DIN 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Vneshtorgizdat No 5159M Ord 383 21
4. not rotate the button without need It should be remembered that to set the shutter speeds of 1 1 2 1 4 1 8 1 15 1 60 of a second an additional effort is required to wind an additional delayed action mechanism spring When the shutter speed dial is being reset for a shorter exposure time the delayed action mechanism is heard operating Besides it when shutter speeds of 1 1 2 1 4 1 8 1 15 and 1 60th of a second are used the shutter speed dial is fixed somewhat higher as compared to other shutter speed settings 5 3 LENS APERTURE SETTING Match a selected aperture value with the index mark dot by rotaling the ring with an aperture scale of JUPITER 8 lens or the ring with the index mark of INDUSTAR 50 lens For convenience each of the indicated lenses has two equivalent aper ture scales and two corresponding index marks 13 14 www orphancameras com 5 4 FOCUSING Objects having sharp contours should be selected for focusing i Watching through the range viewfinder eyepiece turn the diopter adjustment lever to obtain the sharpest image of an object in the eyepiece In the centre of the viewfinder field of view there can be seen a yellowish rectangle with a double image of the object being viewed in it Turn the lens focusing ring to match the two images of the same object Keep in mind that the image should be focused in the centre of the yellowish field The image can be focused by the lens distance sca
5. ar as it will go or turn the shutter setting lever simultaneously holding the sprocket Set the shutter and relese it to check the mechanism operation Mount the cover on the camera or load the camera with another cassette with film according to pa ragraph 5 1 Camera loading 17 o 6 SELF TIMER SYNCHRO SOCKET LENS CHANGING 6 1 SELF TIMER OPERATING The self timer is used when one wishes to photo graph oneself For this aim do the following mount the camera on a tripod set the shutter and set the self timer by turning the self timer lever downwards as far as it will go Set a required aperture and shutter speed select an object and focus the lens Press the self timer release button and take your place in front of the lens The shutter operates in no less than 9 seconds after pressing the button The ZORKI 4K camera allows to use flash lamps when taking picture with the help of the self timer 18 6 2 PHOTOGRAPHING WITH FLASH LAMPS To take pictures in conditions of poor illumination flash lamps are used For this aim plug a tip of a flash lamp connecting cord into the camera socket To use a flash bulb set letter M of the synchro nization scale against the dot on the camera plate When an electronic flash is to be used letter X should be set against the index dot of the synchro nization scale The shutter speed of 1 30 is better to use when photographing with flash lamps
6. be sharp on film It should be kept in mind that the larger the aper ture the smaller is the depth of field and vice versa 15 16 www orphancameras com 5 5 PHOTOGRAPHING To take a picture do the following a load the camera b take the cap off the lens c set the lens aperture if required put a light filter or a sun shade on the lens d set the shutter e set a required shutter speed f watching through the eyepiece of the range view finder point the camera at the object adjust the eyepiece according to your eye and focus the lens g smoothly press the shutter release button NOTE When using shutter speeds slower than 1 30 s it is recommended to mount the camera on a tripod and to screw a cable release into of the release button bush 5 6 CAMERA UNLOADING When the exposure counter shows figure 36 rewind the film into the cassette For this aim a remove the case b turn the shutter disengaging bush in the clock wise direction as far as it will go c pull the film rewind knob upwards and rotate it in the arrow direction till the feel of the applied force indicates that the film end has left the take up spool d take the cover off the camera and remove the cassette e turn the shutter disengaging bush counter clockwise as far as it will go If the shutter setting lever fails to set in action the shutter mechanism after rewinding the film turn the release button clockwise as f
7. hrough Do not touch surfaces of optical details with hands since this is likely to damage their coating Clean the coated optical details only from outside with a clean soft piece of fabric or cotton wool slightly moistened with rectified alcohol ether petroleum or sulphuric or if these means are absent with toilet eau de Cologne To close the case with the camera in it check that a the case tripod screw would be tightened up b the lens would be set at mark of the distance scale c the shutter speed dial would be set at any shutter speed except for those from 1 60 to 1 second When using the camera in frosty weather below 10 C keep it under your street clothes taking it out only for the moment of photogra phing If the camera is brought from cold in a warm room do not take it out of its case for 2 3 hours to let it take the temperature of ambient air Keep the camera in a closed carrying case In so doing the lens should be capped and the shutter and self timer should be released 4 MAIN UNITS AND DETAILS Fig 1 Front view 1 self timer lever 2 self timer release button 3 flash lamp socket 4 rangefinder window 5 range viewfinder window 6 lens 7 detachable cover locks 8 tripod nut 7 www orphancameras com Fig 2 Top view 9 diopter adjustment lever 10 attachment groove 11 shutter speed dial 12 synchronization scale 13 shutter release button 14
8. le calibrated in metres as well In such a case the distance to the object being photographed should be known beforehand The viewfinder enables to see the limits of picture For correct framing bring your eye as close to the eyepiece as possible in so doing the yellowish rectangle should be placed in the centre of the view finder field of view If the above rules are not follo wed framing is likely to be wrong i e the limits of image seen in the viewfinder would fail to cor respond to the frame limits on the negative To take a picture of several objects placed at diffe rent distances from the camera use should be made of a depth of field scale The scale consists of the aperture numbers repeated on both sides of the main gt index mark When the aperture is set and the lens is focused the limits of depth of field can be read against these number pairs on the distance scale For example with the lens focused for 3 m and aperture of f 8 two figures 2 2 m and 4 8 m on the distance scale will be set against divisions 8 of the depth of field scale These distances are called the near and far limits of depth of field Objects placed nearer than 2 2 m or farther than 4 8 m will be blurred in the picture The far limit of the depth of field may coincide with the infinity mark or even come beyond the distance scale In such a case all the objects placed between the near limit of depth of field and infinity will
9. ter the film moves by one frame To advance unexposed part of film to the film gate set and release the shutter wo times PICTURE TAKING 11 12 www orphancameras com Before releasing the shutter after the second setting set figure 0 of the exposure counter dial against the index mark on the shutter setting lever If the film is wound tightly in the cassette the film rewind knob will rotate when the shutter is being set Should the film be wound loose in the cassette the knob will fail to rotate at the initial frames Now you can put the camera into its case Do not ko to tighten up the tripod screw in the case ottom 5 2 SHUTTER SPEED SETTING Shutter speeds may be set only with the shutter set Pull up the shutter speed dial and turn it till a re quired shutter speed value is set against the index mark Release the dial in such a way that it would be fixed without pressing Figures on the shutter speed dial denote correspon ding fractions of a second and letter B hand controlled shutter speed To obtain an exposure longer than 1 second set the dial index mark against letter B In this case the shutter stays open till the release button is pressed To obtain a still longer exposure the release button can be fixed in this position by turning it counterclockwise as far as it will go The exposing over return the button into the initial position To avoid mechanism disengaging do
10. ve aperture range 3 5 to f 16 2 to f 22 Focusing range m 1 to 1 to Field of view grades 45 45 Lens seating thread M39x1 M39x1 Lens mount thread for light filters CnM 35 5 0 5 CnM 40 5 X0 5 Seat for sun shade mm 37 42 Overall dimensions of camera without case mm 143 x88 x94 Mass of camera without case kg 0 6 TO kd 3 GENERAL INSTRUCTIONS The present Manual contains brief description and main rules of using the ZORKI 4K camera but it should not be regarded as a handbook on photography i Before starting to use the camera thoroughly study the operating procedure according to the given Manual The camera is a complicated optical mechanical device which should be handled carefully kept clean and protected from b ows moisture and sharp changes in temperature 3 Load and unload the camera in diffused light trying to avoid direct sun rays When removing the camera cover see to it that the cassette would not fall out Set shutter speeds only with the shutter cocked Do not turn the shutter speed dial over the interval between figures 30 and 1 Always set the shutter till stop to avoid blank frames during exposing If the shutter faiis to set check the position of the shutter release button and the shutter disengaging bush Before setting the shutter they should be turned in the clockwise direction till stop Do not point the lens at the bright sun to prevent curtains from burning t
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