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When taking photos using infrared film, the position at which the subject is in focus is
slightly different than that of regular films. This is because the infrared rays have a
longer wavelength and the image converges behind the film plane of regular film. Use
the procedure described below when taking photos using infrared film.
1. Set the focus as usual. Read the point on the distance scale matching the center
index of the depth scale.
2. Set the focus mode selector lever to “M” (manual focus mode). Turn the focusing
ring clockwise and align the read point to the infrared index.
Use a red filter when taking photos using infrared film.
Be sure to read the infrared film’s usage instructions.
You cannot take photos in AE mode when using an infrared film.
Infrared Photography
Flash Photography
In addition to its standard flash sync system, the Mamiya 645 AFD features TTL (through
the lens), off the film (OTF), electronic flash exposure metering. 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 Mamiya 645 AFD s 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.
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
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.
Adapter
Type of Flash
SCA3952
Module
SCA3000C
Converter
Metz Flash Unit
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
Exposure mode Shutter speed Aperture
P Program AE
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
Av Aperture priority AE Any aperture
Tv Shutter priority AE
Automatically set by camera to 1/125 when the
set shutter speed is 1/125 sec. or faster.
Automatically set
by camera
M Manual mode Any aperture
X Synchro mode 1/125 sec. Any aperture
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.
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.
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