Phase One 645 AF - Manual (Page 40)

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A flash sensor located inside the camera body reads the flash
reflected off the film surface at the moment of exposure. The sensor
is connected via the Phase One 645 AF s dedicated hot-shoe to a
shoe- or handlemount style Metz flash unit via the Metz SCA 3952 TTL
Adapter. Maximum flash sync speed is 1/125 sec., making daytime
synchronization possible.
The ISO of the flash is automatically set through the TTL connection
from the camera’s Film Magazine; any adjustment to this is instantly
recognized after the setting is locked and the shutter release is half-
pressed. Also, when Film Magazines with different ISO settings are
switched on the camera body, the TTL flash connection instantly
recognizes the change.
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. However, as
with all TTL systems, it requires manual compensation for differences
in film surface reflection characteristics. The amount of compensation
is determined by experimentation and is performed on the Mamiya Film
Magazine ISO setting.
1. Mount the SCA3952 adapter onto the Metz flash, insert fully into the
camera’s hot shoe, and then tighten with the locking knob.
2. Set the exposure mode, and then check the shutter speed and
aperture.
Type of flash SCA3952 Module Converter
Metz 44 MZ-2 shoe-mount x
Metz 54 Mz-3 shoe-mount x
Metz 45 CL-3 & 4 Handle-mount x SCA 3045
Metz 60 CT-4 Handle-mount x SCA 3000
Metz 70 Mz-5 &4 Handle-mount x
Adapter
Metz Flash Unit
A
For more info on Metz, contact the local Metzdealer or www.metz.de