Specifications

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A
Flash Photography
In addition to its standard flash sync system, the Mamiya 645DF features TTL (through
the lens), electronic flash exposure metering. A flash sensor located inside the camera
body reads the flash reflected off the sensor at the moment of exposure. The sensor is
connected via the Mamiya 645DFs dedicated hot-shoe to a shoe- or handle-mount
style Metz flash unit via the Metz SCA 3952 TTL Adapter. Maximum flash sync speed
is 1/125 sec., making daytime synchronization possible.
To utilize the TTL flash feature with all TTL-operable Metz flash units, a Metz SCA
3952 Module is required. Please see the chart below for compatibility and/or additional
adapters that may be necessary.
The resulting flash exposure automation determines correct flash exposure and
automatically adjusts the output
of the flash. It also automatically
corrects for exposure
compensation normally required
when using filters, close-up
bellows or extension tubes.
1. Mount the SCA3952 adapter onto the Metz
flash, insert fully into the camera’s hot shoe,
then tighten with the locking knob .
2. Set the exposure mode, then check the
shutter speed and aperture.
With TTL flash photography, the reflection of the flash is metered and the intensity
of the flash is adjusted automatically, so TTL flash photography may not be able to
suit to all conditions. In the cases described below, we recommend that you use a
flash meter to check the intensity of the flash or to use a manual flash setting.
Exposure mode Shutter speed Aperture
P Program AE
Av Aperture priority AE
Tv Shutter priority AE
M Manual mode
X Synchro mode
Automatically set by camera to 1/60 sec. when
the 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 the
set shutter speed is 1/125 sec. or faster.
1/60 to 1/125 sec.
Automatically set
by camera
Any aperture
Automatically set
by camera
Any aperture
Any aperture
For example:
(1) When the size of the subject you want to light with the flash is relatively small within the
picture
(2) When the background behind the subject is extremely bright or when there is a strongly
reflective 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 Mode
When a moving subject has been shot under this function, the flash of light appears
after 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 mode
Rear Curtain Sync Mode
Adapter SCA3952 SCA3000C
Type of Flash
Metz Flash Unit
Module Converter
Metz 44 MZ-2 Shoe-mount x
Metz 54 MZ-3 Shoe-mount x
Metz 45 CL-3 and -4 Handle-mount x x
Metz 60 CT-4 Handle-mount x x
Metz 70 MZ-5 and -4 Handle-mount x