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A ash sensor located inside the camera body reads the ash
reected off the lm 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 ash unit via the Metz SCA 3952 TTL
Adapter. Maximum ash sync speed is 1/125 sec., making daytime
synchronization possible.
The ISO of the ash 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 ash connection instantly
recognizes the change.
To utilize the TTL ash feature with all TTL-operable Metz ash 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 ash exposure automation determines correct ash
exposure and automatically adjusts the output of the ash. It also
automatically corrects for exposure compensation normally required
when using lters, close-up bellows or extension tubes. However, as
with all TTL systems, it requires manual compensation for differences
in lm surface reection 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 ash, 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