Mamiya DM System, User Manual

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Chapter 1 - Basic info
76
Chapter 6 - Exposure Modes
lonG exposure mode (bulb mode)
To expose film longer than 30 seconds, adjust the shutter speed to “B” (bulb). In order to
prevent camera shake, use an electromagnetic shutter release and tripod.

As the camera is electronically controlled even during exposures, it is recommended to replace
batteries before bulb exposure.
1. Turn the exposure mode dial and
set it to “M” (manual mode).
2. Turn the front dial to select “bulb”,
then turn the rear dial to set the
aperture.
3. Determine the composition, focus,
then take the picture. The shutter
remains open as long as the shutter
release button is pressed.
P
Av
Tv M X
CF
C1
C2
C3