www.araxfoto.com -mediumformat cameras,lenses,accessories,services Page 4of 7
3. OPERATINGPROCEDURE
3.1. CameraLoading
The cameracan beloadedinlight (preferablyintheshadow).
Takethe cameraoutofthe carrying case.Open back 17byfirstsliding thearrowup tothestop and depressbutton
25 located on the lowercover. Pull locks 22and 24 bythe clips,turnthemcounter-clockwise,securing them,Thiswill
bring pivots18 and 19down.Insert the take-up spoolintotheright-handchamberofthe camerasothat the uppercentre
carrierfitsitsslot.
Holdingthespool, introducelower centre18intoitshole turning lock22 clockwise.
Tearthe papertagofftheleaderend.Insert the spool withfilmintothe left-handchamberofthe camerasothatthe
carrieroftheuppercentreentersthespool slot. Holding thefilmand leaderbyahand topreventunrolling,putlower
pivot 19 through the spoolhole, turning lock 24clockwise.
Thread the leaderendintothetake-up spooland turning thelatterwind theleaderontoituntil the markon theleader
alignswiththeredindexon thecamerahousing.
Toobtain the full-specified numberofpictureson thefilmand toensurecorrectoperation ofthe framecounter
observethe following rules:
- when loading wind the leadertightlyon the take-up spool;
- takemeasuresagainst leader cocking,creepingover thespool flangesor crumplingleader edges;
-when cockingtheshutter, takecaretobringthe leverto the stopin one smoothmotion (donotcock the shutter
usingseveral small turnsofthelever).
Close the backbypressingit tothe camerauntilaclickisheard.
3.2. Preparing theCameraforShooting
Makethreeblankshotstowind theleaderontothetake-upspool.Nowafterthe shutteriscockedthenexttimefigure
"1" will appear inframecounter window11 whichcorrespondstothe firstframeonthefilm.
Setthe film-in-usespeed onscale 10byholding lever1,andturnthe disk withscale10 until the filmspeed number
alignswiththeindex. The filmspeedscaleisgivenin unitsof DIN.
3.3. Shooting
The operation of thecamerabreaksdownintothefollowing steps:
1.Shuttercocking and filmtransport
2.Determiningtheexposuretime(shutterspeedandaperture);
3.Shutterspeed setting
4.Aperturesetting
5.Composition
6.Focusing
7.Mirror lock uprelease(optional)
8.Shutter release
Cock the shutterturning lever1up tothe stop.Ifthe shutteris fullycocked,theleverwillautomaticallyreturntothe
initial position,ifnot, itwill remain in anintermediateposition (in thiscaseitshould becocked again)Anincomplete
cockingofthe shuttershould be avoided.At the beginning ofcocking the shutteraslightincreaseofforceapplied tothe
levermaybefelt. Incocking the shutterthe filmiswound throughoneframeandthe nextnumberappearsinthe frame
counter window. The counter indicatesthenumberof framesshot.
Determination of theexposuretimeiscarriedout withthe shutter beingcocked.
Fordeterminingtheexposuretimesetonthe
calculatorthe speed ofthefilmloaded intothe
cameraturning knob 31 until the filmspeed
valuesin unitsof DIN appearsin windows28.
Seton the calculatorthelensspeed turning
scale 29until the appropriatevalue coincides
withindex30.
The lens speed meansthe number
correspondingtothe maximumrelativeaperture.
For example,for lensMC ARSAT2.8/80 =2.8.
Fordeterminingthe "speed/aperture"
combinationscorrespondingtothe shooting
conditionsdo the following:
-Presstheexposuremetercircuitactuating
button32 (it will beoffautomatically);
-Observingthrough viewfindereyepiece39
framethe subjectsothatitsimage will fall inthe
rangesofthe zone ofmeasurementofthe
viewfinder. Inthe fieldofvisionofthe viewfinder
eyepieceyouwill seeone oflighting signals:left=underexposedorright=overexposed.Slowlyturnring 27 up tothe
momentoflightingofthe second signal(ifleft signalis lit-counter-clockwise,ifright-clockwise). Determination ofthe
exposuretimeiscarried out atsimultaneousillumination of bothsignals;
-Choosethe"speed/aperture"pair, whichyoupreferforshooting on thecalculatorbyexposurescale 27 andby
diaphragmscale29
Note:
Brightlightnotbe permitted,as faras possible,topenetrateintotheeyepiece.Inthisinstance eyeshades 38
and 23shouldbeused.
