Pentax SF1 - B (Bulb) and 100 (1;100 Sec.) Settings

B (BULB) AND 100 (1/100 SEC.) SETTINGS
Select the "B" (bulb! or "lOO" (1/100 sec.) setting by
sliding the select switch to the UP or DOWN position
while holding the mode/drive switch at the MODE
position. The appropriate indicator wilt appear on the
CENTIC panel. When you press the shutter release
button halfway down, the Indicator "M" wilt appear
in the viewfinder.
Using the "B" (Bulb) Setting
Use this setting for long-time exposures of subjects such
as fireworks and night scenes. The shutter remains open as
long as the shutter release button is held down.
• When using the bulb setting, stabilize the camera with
a solid tripod and connect the optional Cable Switch F
(with a lock mechanism) to the camera's release socket,
as illustrated.
• With one fresh 6V lithium battery or four fresh "AA"-
size alkaline batteries, a long-time exposure of approxi¬
mately 7 hours is possible under normal temperatures.
Using the ''100" (1/100 sec.) Setting
This setting is used for flash photography using a general
clip-on type flash unit with a fixed shutter speed of
1/100 second.
• When using a general clip-on type flash unit, the aperture
must be set manually with the lens aperture ring accord¬
ing to the ISO speed of the film in use, the distance to the
subject and the flash's guide number. (See the operating
manual of the flash unit concerned.)
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