Mamiya PRO 645 - Manual (Page 29)

To override the multiple expo-
sure mode or to return to normal
operation, be sure to return the
lever’s White Dot against the white
squareandthenadvancethefilm.
(If you forget you will continue to
make multiple exposures on the
same frame.)
For time exposures set the Shutter
Release Selector to
the self-
timer mode, and set the Shutter
Speed Dial to “B”. Press the shutter
release and both mirror and shutter
will stay open until the shutter re-
lease is pressed again. You may
also use a cable release together
with the cable release adapter. (The
battery circuit will automatically
switch off to save power.)
“B” can be terminated by shift-
ing the Shutter Release Selector
from or the Shutter Speed
Dial from “B”.
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