Mamiya 645DF Instructions Manual

Also see for 645DF: User guide Instructions User guide Instructions

Contents

Mamiya 645DF Instructions Manual Manual pdf 38 page image

AFlash PhotographyIn addition to its standard flash sync system, the Mamiya 645DF features TTL (throughthe lens), electronic flash exposure metering. A flash sensor located inside the camerabody reads the flash reflected off the sensor at the moment of exposure. The sensor isconnected via the Mamiya 645DFs dedicated hot-shoe to a shoe- or handle-mountstyle Metz flash unit via the Metz SCA 3952 TTL Adapter. Maximum flash sync speedis 1/125 sec., making daytime synchronization possible.To utilize the TTL flash feature with all TTL-operable Metz flash units, a Metz SCA3952 Module is required. Please see the chart below for compatibility and/or additionaladapters that may be necessary.The resulting flash exposure automation determines correct flash exposure andautomatically adjusts the outputof the flash. It also automaticallycorrects for exposurecompensation normally requiredwhen using filters, close-upbellows or extension tubes.1. Mount the SCA3952 adapter onto the Metzflash, insert fully into the camera’s hot shoe,then tighten with the locking knob .2. Set the exposure mode, then check theshutter speed and aperture.With TTL flash photography, the reflection of the flash is metered and the intensityof the flash is adjusted automatically, so TTL flash photography may not be able tosuit to all conditions. In the cases described below, we recommend that you use aflash meter to check the intensity of the flash or to use a manual flash setting.Exposure mode Shutter speed ApertureP Program AEAv Aperture priority AETv Shutter priority AEM Manual modeX Synchro modeAutomatically set by camera to 1/60 sec. whenthe metered shutter speed is 1/60 or slower,and 1/125 when it is 1/125 sec. or faster.Automatically set by camera to 1/125 when theset shutter speed is 1/125 sec. or faster.1/60 to 1/125 sec.Automatically setby cameraAny apertureAutomatically setby cameraAny apertureAny apertureFor example:(1) When the size of the subject you want to light with the flash is relatively small within thepicture(2) When the background behind the subject is extremely bright or when there is a stronglyreflective object in the background(3) When the background behind the subject is extremely dark (outdoors at night, etc.)(4) When light from the flash is incorrectly directed and falls too widely from the subject.Rear Curtain Sync ModeWhen a moving subject has been shot under this function, the flash of light appearsafter the moving subject.This function is set by Custom function setting.Custom setting (C-15 on page 85)Rear curtain sync mode Front curtain sync modeRear Curtain Sync ModeAdapter SCA3952 SCA3000CType of FlashMetz Flash Unit Module ConverterMetz 44 MZ-2 Shoe-mount xMetz 54 MZ-3 Shoe-mount xMetz 45 CL-3 and -4 Handle-mount x xMetz 60 CT-4 Handle-mount x xMetz 70 MZ-5 and -4 Handle-mount x