Mamiya PRO 645 - Manual (Page 33)

2. For MF and M bulbs, set the
Shutter Speed Dial to 1/30 sec. or
slower for the MF type, and 1/15
sec. or slower for the M type.
* When using a flash, carefully
read the instructions that come
with the flash bulbs or flash unit
to check for appropriate shutter
speeds and to avoid malfunctions.
The Mamiya 645 PRO Tripod Socket
accepts a standard
1/4" tripod
mounting screw. For use with tri-
pods having 3 / 8 " mounting screws,
first unscrew the small black philips
head retaining screw in the center of
the tripod socket. Then remove the
1/4” bushing with a thin coin. To re-
install the 1/4” bushing, reverse the
process
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