Pentax 645 - UTILIZING B (BULB) POSITION

UTILIZING B (BULB) POSITION
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B (Buib)
The bulb position is used for time exposures
requiring 15 seconds or more. While the shutter
release button is depressed, the shutter will be
open. The time exposures are recommended for
firework displays, night scenery and/or
astronomical photography.
Swithing to the "B", the B display will become
visible within the LCD window by depressing the
selecting button (“up") while depressing the mode
button at the same time.
With the main switch ON, depress the shutter
button slightly, then, the ''B" and "F—" will be
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displayed by LED in the viewfinder.
When shooting at the B position, it is
recommended that a sturdy tripod and the Cable
Switch A or a cable release (available optionally)
be employed to prevent possible camera shake.
The Cable Switch A or a cable release may be
easily screwed into the shutter release button.
Time exposures are made simple through the use
of the Pentax Cable Release 50.
Cable Release 30 is not recommended for use.
The long-time exposure consumes the battery
power so greatly that even fresh alkaline
batteries can be exhausted in about 40 hours.
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