Pentax 645 - SHUTTER RELEASE AND MODES

c/s SWITCH, MAIN SWITCH AND SHUTTER RELEASE BUTTON
The Pentax 645 incorporates a motor drive unit,
permitting either single or consecutive shooting
through the C/S switch. Select either the C or S
position by turning the C/S switch.
• Single frame shooting (S)
By depressing the shutter release button, a single
frame is exposed and automatically wound to the
next frame, at which point the motor halts.
• Consecutive shooting (C)
While the shutter release button is kept
depressed, the frames are continuously exposed
at about 1.5 frames/sec. Once finger pressure is
released from the shutter release button, the
motor will halt after winding the film to the
next frame.
• Main switch and shutter release button
A light pressure upon the shutter release button
with the main switch turned ON will immediately
activate the exposure meter causing the LED
indicator to appear in the viewfinder of the
camera; further pressure on the button will
release the shutter. A timer switch has also
been integrated into the exposure meter circuit,
and will automatically terminate power
approximately 30 seconds after finger is removed
from the release button.
• Turning the main switch off during exposure will
result in incorrect exposure.
20