Pentax 67II - Manual (Page 55)

ADVANCED OPERATION
53
F will be displayed in the viewfinder when
the shutter release button is depressed
halfway.
In the Bulb Exposure Mode, use a steady
tripod to prevent camera shake and attach the
optional Cable Release.
● The indicators in the
viewfinder can be light up
by depressing the Cable
Release halfway.
● See page 15 for the bulb
exposure time when a new
battery is used.
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