Sony a (alpha) DSLR-A100 Operating Instructions Manual page 40

BULB (long exposure) shooting
As long as the shutter button is pressed, the shutter remains open. You can shoot trails of light,
such as fireworks. Attach a tripod to the camera when using the bulb shooting function.
1 Set the mode dial to M.
2 Turn the control dial to the left until [BULB] is indicated.
3 Press and hold the +/– (Exposure) button and turn the control dial to select the aperture.
4 Attach the eyepiece cover (page 41).
5 Press and hold the shutter button for the duration of the shooting.
• You can shoot in bulb exposure mode up to about four hours using a fully charged battery pack.
• After shooting, the noise reduction will be done for the same amount of time that the shutter was open.
When the message "Processing..." appears, you cannot do any further shooting. To cancel this function,
see page 85.
• The Super SteadyShot function is automatically turned off.
• The higher the ISO sensitivity, or the longer the exposure time, the more outstanding the noise on the
monitor.
• To reduce camera-shake, connecting the Remote Commander (not supplied) is recommended (page 144).
40
Mode dial
Control dial
Shutter button
+/– (Exposure) button