Mamiya M645 1000S Precautions, Releasing the shutter with no film in the camera, Mirror Lock-up

Precautions

Releasing the shutter with no film in the camera

Thefilmtransport mechanismhasa built-insafetylock which preventstheshutterfrombeingreleasedafterthe lastexposureonarolloffilm,orwhenthereisnofilmin

thecamera.Thus,whentheshutterreleasebuttonlocks undersuchcircumstances,donotforceitToreleasethe

shutter,merelysetthemultiple-exposureleverto“MULTI”.

Mirror Lock-up

Whenthemirrorislockedintheuppositionandthe cameraisoutdoorsthereisasmallpossibilityofsunlight enteringthelens,focusingontherubberized-clothfocal planeshutter,andburningittoacertaindegree.Although

suchapossibilityisremote,cautioniscalledfor.There- fore,whenusingmirrorlock-upoutdoors,alwaysreturn

themirrortoitsnormalpositionaftercompletingallyour mirrorlock-upexposures.Iftheintervalbetweenmirror lock-upexposuresislong,lowerthemirrorwhilewaiting.

The 0 position on the Shutter Speed Dial

Iftheshutterisreleasedwiththeshutterspeeddialsetto the0position,themirrorwilllockintheuppositionand thefilmadvanceknobwillnotmove.Ifthecameraisleft

inthisconditionthebattery willloseitspowerwithin severalhours

The0position isonlyforusewiththePDPrismFinder.

Photographing at Low Temperatures

Whenphotographingatlowtemperatures,becarefulof thefollowingpointstomaintaincameraperformance.

1.Besuretouseafreshbattery.

2.Whenusingelectronicflash,settheshutterspeeddial to1/30sec.orlonger.

3.Placethecameraintheoutsideaironlyduringthe momentofexposure.

*Whenworkingatextremelylowtemperatures,itsome- timesbecomesimpossibletowindthefilmadvancecrank aftertheshutterhasbeenreleased.Insuchacase,after placingthecamerainawarmplace,itwillbecomepossi- bletowindthefilmadvancecrankiftheuppershutterre- leasebuttonisstronglydepressedasfarasitwillgo. *Abatterythatmalfunctionsatlowtemperatureswill becomeusableagainwhenitisreturnedtonormaltemper- ature.However,thebatteryshouldnotbesubjectedto rapidandextremechangesoftemperature,lestitgrow unreliable.

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