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08-18-2012, 01:47 PM   #1


what the hell is bulb and how does it work ?

08-18-2012, 02:36 PM   #2
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A mode to allow you to shoot very long exposures. Exposure starts when you press and ends when you release.

It is best used with a cable or IR remote which prevents vibration of the body which should be on a tripod or dead rest for best results.

Example: 1hr exposure of star trial

Last edited by KevinR; 08-18-2012 at 02:45 PM.
08-18-2012, 09:26 PM   #3
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History - time exposures used to be done with a pneumatic bulb and tube that pushed the shutter release, replacing the cable type release for a combination of better length and less camera motion due to the cable flex.

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