DVW 790 Sony - Cinematography Mailing List
Contents
1. CO pop p p oo o CC C sw ef White ee E ooo o i eme p p SSS e ok ok override Sa a ee eee Back to Top Neil Thompson Image Creation Group Sony Broadcast amp Professional UK July 1999 Please could you fill in our Optional Form about this feature We are always grateful for your input2. Oo e e e o O indep Operation AWB level 2 gate Time code display PAL coder alignment Zebra O SS Ea a a a bal a a bal a a a fmiscres id Back to Top Page Item Factory Suggestion Explanation Menu SEGO Marker 1 3 The next 3 pages determine which pages are selected to appear in the user menu me o a Menu select 2 Menu select 3 Menu select 4 lt lt lt O peme ee E Ce a LC a fem p p S C a a 2 C C S a C a OO a ee ee S eswenen rovovew _ monorse_ soaveone for fox ewe fox fw CO foen O oe S C a a O feo O rere S a a a a C a a a E a S z Outputs VF markers to test out eg director Market 3 3 Testout Mix can see 14 9 safe area RM VF menu Allows menus to be adjusted on RM B150 ee ON ON o inhib without appearing in VF E C C Back to Top neue Item Factory Suggestion Explanation eefe fe p e 2 2 permanently displayed in the O we fo e po y oC C ewe o e S EE a E E 12 Choose a caption eg programme name to be Shot ID Characters e a e on bars EE TEE C E CRE E a aa a A E Shot Date OFF ON Selects the data superimposed on the colour Display bars test signal Name No ID select select Snuuer Damn This page doesn t select the shutter speed in speed use use only the options that are available via use only the options that are available via options that are available via 1 60 switch on front of camera 1 125
3. 2 Extension Viewfinder and Colour Viewfinder An extension viewfinder is now available This is the BKW LVF1 and can be added to any standard viewfinder fitted to the 700 709 or 790 This features a two piece variable extension tube that maintains image size throughout the extension range A mounting point for an Arri self levelling arm is incorporated Also available is the BVF VC10WCE a 1 5 widescreen colour LCD viewfinder Although still not able to compete with a tube viewfinder in terms of resolution and lag colour reproduction and highlight handling are very good and this will be a useful tool in certain circumstances Like all our widescreen viewfinders it automatically switches to 4 3 mode with the camera 8 3 Matte Box and Follow Focus A special quick release plate and mounting kit for attaching a wide range of Arri accessories to the 700 series is available ARRI A similar range of accessories is made by Chroziel 9 Option Boards Two new options are available for the 709 and the 790 The BKDW 702 is an SDI output board that gives a serial component digital output with 4 channels of embedded audio from the rear BNC connector This output is available as a direct output from the camera or a replay from the VTR The BKDW 703 is a memory cache board that is a buffer between camera and VTR holding up to 8 seconds of full quality audio and video This allows the user to hit the record button and start recording wha
4. FEATURES DVW 790 790WSP Digital Betacam Camcorder User Guide Dvw 790WSP Neil Thompson Image Creation Group Sony Broadcast amp Professional UK July 1999 1 Introduction This guide aims to provide some of the information not covered in the user manual relating to the set up menus in the new 700 series Digital Betacam camcorders Some recommended menu settings are included for the camcorder which can hopefully be regarded as sensible alternatives to the Sony factory setting The Digital Signal Processing DSP used in the camera sections allows the use of set up cards to become a viable way of aligning a camera Processes such as detail correction gamma matrix knee and clipping are all performed entirely within the digital domain and can therefore be set and transferred accurately and repeatably from a memory card The new generation of camcorders i e the 709 and the 790 now have 12 bit A D converters and a new DSP chipset which combined with the latest PowerHAD widescreen CCDs gives improved noise performance and dynamic range Many new features are also incorporated such as a built in secondary colour corrector multi matrix true eye knee saturation processing and auto white balance offset The CCDs however are still analogue devices and should any drift occur features such as auto black balance and auto shading are provided to correct this It should also be noted that for cameras to be matched they
5. also gives SDI output of E E or replayed pictures complete with 4 channels of embedded digital audio 6 Batteries Two types are available the BP L60A at 60 Watt hours and the BP L90A at 90 Watt hours Some characteristics of Lithium lon batteries They do not suffer from memory effect and can be recharged without being fully discharged They are better at holding their charge in cold weather than NiCad cells They are safe for transport on aircraft lithium ion batteries are very different from lithium dry cells They cannot be charged from NiCad chargers It takes about 2 5 hours to fully charge a BP L60 which will power the camcorder for about 2 hours They have a more gradual discharge curve than NiCads falling steadily from about 16 8V to 11 5V Adapters are available to enable the use of PAG or Anton Bauer battery systems 7 Widescreen Some frequently asked questions about widescreen issues You don t have to buy a widescreen lens for shooting widescreen Widescreen switchable lenses have a 0 8x minifier in the range extender section This is to compensate for the fact that if you are shooting 4 3 on a switchable camcorder the angle of view of your lens will be slightly less than on a 4 3 only camcorder The 0 8x minifier restores the angle of view to what it would have been You can select a 14 9 cursor in the viewfinder for shoot and protect Alternatively the box cursor can be used to create a safe zone of any requi
6. during grading in post R Black May be used to compensate for flare from filters or a particular lens Test Out a Sawtooth signal for alignment il Gamma Table AIBICIDIF A Sony BBBC high initial gain C mid initial gain D F Typical film Lifts or crushes mid luminance areas of Master gamma picture oo Individual gamma gives colour offset to mid R gamma A luminance areas oema oo o o Barme o o Blk gamma Range over which it works L M H 0 to Master blk Changes the gain of the black end of the gamma gamma curve R blk gamma fo ts Applies colour offset to low luminance areas Level Matrix OFF OFF The multi matrix page works like a secondary colour corrector Matrix table AIB A Target a particular colour using the Det Colour item and then change Det Coi ur OFF EXEC OFF the hue and saturation of all objects of that colour in the picture Axis Number B Mg R YI G Cy The colour spectrum is divided into 12 sectors each of which can carry bintivaraaind COFF Superimposes the zebra pattern on areas that have been targeted Multi Matrix OFF Back to Top Page Item Factory Suggestion Explanation C Use carefully non standard values may cause unexpected colorimetery Increasing values increases saturation No effect on black white or the grey scale so not like using a colour filter Level 11 lHphase fo fo Timing controls for system integration SC 0 180 0 180 select EC a Set t
7. he auto iris reference level Turn down Level 12 lris set to underexpose pictures average weighting Iris weight 0to4 Increase to tell auto iris to ignore more of the top part of the picture 0 1 2 3 14 Sets reaction speed of auto iris Clip highlight OFF Auto iris ignores extreme highlights W shading a i ae Shading correction for individual lenses W shading Se ee ee Service use B eae Auto knee alignment a CC w p po Offset Offset white OFF OFF Automatically adds a colour temp offset to white A the result of auto white bal Warm Cool Equivalent to balancing through a blue A gel and then removing it to warm Fine A up the look of pictures but more flexible and predictable same fo fo me p p Preset Colour temp Changes the value of the preset colour 3200 3200 aur i white P temperature Dial in your required R Gain P Changing red or blue gain is an alternative way of changing colour temp acme foi Operation i BG OFF OFF For registration measurement only 1 select La aa A B C D F Parallel to gamma table selection in level 8 Low light Sets level at which warning comes on level EBU SMPTE SNG SMPTE bars carry m Select Bars EBU SNG SM SMPTE PLUGE test signal for bright adj White B AWB ATW AWB White bal memory B can become the Auto channel Tracing White select switch warning Ly Wide AWB Increases the range over which the AWB will work FF OFF Only for use with VF without an external zebra switch
8. idually configured pages with items taken from anywhere within the menu structure The user menu pages can then be switched off and the whole menu cut down to a couple of pages containing only the most useful adjustments 3 Set up Cards Cards can be read or overwritten as many times as you like They are quite robust are not corrupted by magnetic fields and can survive accidental immersion in a washing machine Data written for DVW 709 and 790 is inter changeable but will not transfer to the SX camcorders or the DVW 700 Future software will allow the 709 and 790 to read cards from the 700 but this is not recommended at present The cards themselves are usable with any of the above camcorders 3 1 Reading a Set Up Card Insert the card to be read into the slot in the side of the camera label facing outwards Turn on the menu using the Menu on off page switch on the small panel below the gain white balance memory power save switches Rotate the dial on the front of the camera until the page called Set up Card appears in the viewfinder Press and turn the dial until the pointer is at Read camera Press the dial and check the ID of the card is the one you want to read Press again to read Reading a card to a camera will always copy both levels of menu so do not worry about someone having left something odd in the engineering menu that will alter your card settings 3 2 Creating your own set up card To copy a
9. ighlights Knee Aperture lev Detail Comb lo if No effect on PAL models Level 14 3 Detail level The above two pages are repeated for 4 3 operation H V In 4 3 a smaller section of the CCD is used so different detail settings C foie it Detail V black 5 clip clip Level ON OFF ON depend Level dep level Knee Knee Aperture level Back to Top Page Item Factory Suggestion Explanation acai eo o Amount of detail taken out of skin tones Skin tone detect OFF EXEC Point at target skin tone press for auto set up fsauraion fo fo Manual set up Select the saturation hue and range of skin tones to be targeted C CC Sig tonednd OFF OFF Gate indicator in VF and test output Shows which areas will be affected Level Master black eo pooo Stretches and crushes black areas Master gamma lo o s o O Stretches and crushes mid luminance areas gamma Knee point 85 Knee point and slope set the way highlights in picture are compressed Knee Saturation ON ON Restores colour saturation to over exposed highlights Knee saturation level Cpe p p o White clip level w max level of video signal 5 103 107 Level Burstl yei PAL coder alignment Does not affect 5 recorded pictures gC a C CC Ce f o S CO pee p p S SS E C foie E e fo fe a CC ee CC Jexcview fo fe CO foe Manual black balance Can be used to give low luminance areas a colour shift though probably best done
10. igured to record the front camera mic input onto channel 3 via an automatic level control circuit Details of the various configurations can be found in volume 1 of the maintenance manual page 3 28 Beware of making rude remarks about the director if this feature is enabled 5 2 Levels Headroom is factory set to 20dB This means that OdB tone from a portable mixer should be set to 20dB on the input level meters on the camcorder using the manual level controls Headroom can be modified to 18dB or 16dB using internal switches There is a further audio input level control on the front of the camcorder body This is normally only in circuit when the camera mic is selected and will not affect any signal input to the channel 1 and 2 inputs on the back of the camcorder An internal tone generator may be switched on via the VTR menu which sends 1kHz tone direct to tape at 20dB when colour bars are selected 5 3 Monitoring Stereo monitoring is available via the 5 pin XLR on the back of the camcorder Pin connections on page 1 11 of the maintenance manual The mini jack connector can be used to monitor either channel or a mix but not stereo A beep tone can also be enabled via the VTR menu that warns of REC start stop See page 3 30 of the maintenance menu 5 4 Recording to channels 3 and 4 The CA 701 camera adapter gives access to all 4 channels with individual level control monitoring and metering for each channel This unit
11. inhibit F F Select from RET REC TURBO AUDIO Assign switch LOOP REC ATW LOOP REC Widescreen 460743 16 9 to 4 3 and store on card if working VF switches automatically but can be set VF Aspect A o to 16 9 when shooting 4 3 side panels i greyed out Box 4 3 BOX Box cursor 14 9 or 4 3 marker in 14 9 viewfinder Puts 16 9 ID on colour bars Useful ital ID warning for VT editor 16 9 VE ID OFF ID continuously in VF Can be distracting VF Setting 1det 179 2010107 70 Luminance level in of zebra 1 Zebra 1 apt Range of luminance over which zebra 1 Zebra 2 det 100 52 to 109 Standard BBC setting is 95 VF detail Adds detail to VF signal but not to signal level going to tape Test out OFF OFF Zebra pattern can be added to test out zebra signal Changes total level of detail Can also Peale e o ho artificially soften with negative detail Sets balance of horizontal to vertical H V F detail correction Peak frequency of H detail Turn up to Criepenin Noise coring Turn up to REDUCE low P 9 level detail such as skin texture Aperture level oo o ft High frequency detail Dtl white clip ooo ie fi Reduces white edges A ype eo o o Reduces black edges on V detail Ti Hee oe 20 Reduces black edges on H detail Level ON OFF ON Low luminance edges ignored by detail depend corrector avoids exaggerating Eevelien noise in blacks level Level 2 Knee ON ON Emphasises detail in compressed 16 9 Aperture h
12. nother card read the card you want to copy into the camcorder as per section 3 1 Insert a blank card or one that can be overwritten Select Write card from the set up card menu page and press to confirm That s it To create your own set up align the camera the way you like it via the menus either from scratch or by fine tuning a previous set up Write to the card To fine tune a card read it into the camera change the menu item that will improve your setting Write to your card It may be worth putting a version number in the card ID menu to keep track of your settings 3 3 Gamma Curve Selection Several different gamma curves can be selected from the camera menus Each has slightly different gain in the black areas of the picture and a different roll off in the knee area Curve A is the standard Sony setting curve B has a high initial gain as required by some departments of the BBC This gives more definition in low luminance areas black stretch but also magnifies any noise present Curve C comes somewhere in between and curve D gives a black crushed look Curve F is a composite of the four different film gamma curves already available on separate cards for the DVW 700 The separate film gamma cards cannot be read at present though it is hoped to enable this feature on future software versions These options have been introduced to more closely match the transfer characteristics of film especially in the highlight regio
13. ns Also they can be seen as very useful tools in achieving a more cinematic or film look for Digital Betacam recordings when required Four cards are supplied in the BSC 1F1 pack each of which simulates the transfer characteristic of a slightly different film stock Film has a transfer curve with different slopes for different parts of the exposure range it has shallow slope in the shadows area slopes consistently in the mid tone region and flattens off in high lights The new set up cards contain data closely replicating the gamma transfer curves for the most frequently used Kodak stocks 4 Character Displays You may find it convenient to have the menu characters and or timecode displayed on a monitor whilst setting up a camcorder This can be by enabling page MARKER 3 3 items 1 3 and 4 and page OPERATION 2 item 4 Cursors safety markers and timecode can be displayed on a monitor which may be useful for director and PA without having the timecode appear in the viewfinder Under no circumstances will any character or menu displays be recorded over pictures by the camcorder 5 Audio 5 1 Format Digital Betacam format VTRs are capable of recording 4 channels of digital audio All channels are independently editable unlike for instance the FM tracks on Betacam SP It uses a 48kHz 16 bit sampling system Pre emphasis may be switched on via the VTR menu but is factory set to OFF The 709 and 790 can also be conf
14. red height and width The widescreen camcorders are supplied as standard with the 2 widescreen viewfinder An optional colour LCD viewfinder is also available A menu option on the widescreen selection page allows the viewfinder to be set to 16 9 whilst shooting in 4 3 with the sides of the picture greyed out in order to give an oversized view right and left of recorded picture Widescreen pictures replayed onto a normal monitor or telly will make people look tall and thin They will of course look correct on a widescreen telly or a monitor with a 16 9 button Letterboxing via some sort of effects unit prior to transmission will make them the right shape again for non widescreen capable viewers at home 8 Film Style Accessories Many people like to use a range of accessories with the 700 series camcorders that might more usually be associated with operating a film camera Some of the more popular items are listed below 8 1 Lenses The ability of a lens to hold the image size constant whilst pulling focus is often an important issue To this end several lens manufacturers have produced digital cinematography style lenses for the 700 Some of these also have features such as aperture calibration in T stops rather than F stops gearing for focus and zoom drives compatible with Arri equipment extra large characters for calibrating the lens and increased number of turns from end to end of the focus range 8
15. t happened 8 seconds ago This function can be enabled or disabled from the menu or by allocating this function to the assignable button A green LED lights in the viewfinder when in loop record mode On ending the recording the VTR will keep running for 8 seconds in order to catch up Recording can be re commenced seamlessly at any time during this period Note use of the loop recording function automatically puts timecode into free run mode Note for the full 8 seconds to be available the camcorder should be in Standby mode Back to Top Page Item Factory Suggestion Explanation Read gt Write gt Card Create a setup card Cards can be re written as often as you like Write protect Protects against accidental erasure White Data OFF OFF A and B white balance memories stored Read on card Tai Turns detail circuit off very soft pictures Test Out ENC R G B ENC R G B may be selected for lineup os Matrix ON ON Off will desatturate pictures Can be useful but usually left on amma ON ON Off gives v black crushed pics Day for night Test sawtooth Engineering test signal tape SS Field frame FLD FRM FRM mode causes motion blur odes OFF OFF Use up down buttons to set auto iris Override DCC function select DCC FIX DCC Can be set to FIX disabling the dynamic function Rear BNC out VBS SDI OFF VBS SDI Set to SDI if BKDW 702 is installed ae VTR Mode For use if external VTR connected Rec
16. will still need to be white balanced on the same target from the same point of view after being loaded with the same set up card 2 Menu Controls 2 1 User Menu The camcorder has two levels of menu control The user menu is accessed simply by the menu switches on the side of the camera As delivered from the factory this contains a limited number of pages of functions considered useful to the operator More pages can be assigned to this menu if required 2 2 Engineering Menu The engineering menu is accessed by powering up the camcorder with the menu wheel on the front of the camera pressed in Note the user menu is relative to the engineering menu for many of the level controls e g if detail level in the engineering menu is set to 10 and in the user menu to 10 the overall effect will be detail set to zero Looking in the user menu the operator may have the impression that detail is wound up a bit to 10 In general it is recommended that all items in the eng menu are left at zero or factory set level and any tweaking is done via the user menu More pages can be assigned to the user menu if access is required to a particular control A full list of the available menus is attached at the end of this document including a brief description of the function of each item and a suggested setting for each item 2 3 Camera Operator Menu Instead of selecting whole menu pages to the user menu it is possible to create up to five indiv
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