Pentax K100 D Digital Camera User Manual


 
146
5
Function Reference
This mode is useful for the long exposures required for shooting night
scenes and fireworks.
The shutter remains open as long as the shutter release button is kept pressed.
1
Set the mode dial to p.
Using the p (Bulb) Mode
Turn the e-dial to adjust the aperture value.
Set the aperture value in increments of 1/2 EV or 1/3 EV. Set in [Expsr Setting
Steps] in the [A Custom Setting] menu. (p.148)
Use a sturdy tripod and the cable switch CS-205 (optional) to prevent camera
shake when using p (Bulb) mode. Connect the cable switch to the cable
switch terminal (p.15).
Bulb shooting is available when using the remote control shooting mode
(p.64). The shutter remains open as long as the optional remote control’s
shutter release button is held down.
Noise reduction is a process to reduce noise (image roughness or
unevenness) caused by low shutter speed. Set in [Noise Reduction] in the
[A Custom Setting] menu. (p.106)
When in p (Bulb) mode, the sensitivity is equivalent to ISO 200 when
sensitivity is set to [AUTO].
About the L Button
The aperture and shutter speed are automatically adjusted to the
appropriate exposure at that moment if the
L
button is pressed in
a
(Manual) mode. You can choose from the following three adjustment
methods in [AE-L bttn on M expsr] in the [
A
Custom Setting] menu.
Shutter speed is adjusted to appropriate exposure according to lens
aperture when lens aperture is not set to s position.
1 Notes on [Using Aperture Ring] (p.188)
1 Program Line
The aperture and shutter speed are adjusted automatically.
2Tv Shift
The aperture is locked and the shutter speed is adjusted
automatically.
3Av Shift
The shutter speed is locked and the aperture is adjusted
automatically.