Pentax 645 645 Manual - Page 47

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UTILIZING B (BULB) POSITION 2 • ON PIA S lossmimoV B (Bulb) 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 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. 45

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UTILIZING
B
(BULB)
POSITION
2
•
ON
PIA
S
B
(Bulb)
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
lossmimoV
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.
45