Controls in detail —continued, Shutter release button – Nikon F3 User Manual
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CONTROLS IN DETAIL —continued-
22
Memo holder
As a reminder of the film type and the number of ex
posures on the roll in use, clip off the end of the film
carton and insert it into the memo holder.
Note:
At the "B"setting, unless you hold the shutter release button down
all the way, the shutter may close prematurely.
Shutter release button
Slight pressure on the shutter release button switches on
the exposure meter. Pushing the button all the way down
releases the shutter. The shutter release button is thread
ed at the center to accept a standard cable release.
When battery power fails, the F3's electromagnetically
controlled shutter ceases to operate. You cannot release
the shutter release button unless you use the backup
mechanical release lever ®.
To lock the shutter release button when the camera is not
in use, turn the power switch to the "OFF" position.