.::BULB::.

[[File:Doppel-Drahtauslöser.jpg|thumb|Long exposure with double cable release]] The bulb setting is used on some cameras, including some point-and-shoot cameras, to obtain shutter speeds slower than the maximum offered by the camera otherwise. Because of the risk of camera movement, the camera is most often mounted on a [[Tripod (photography)|tripod]] for the duration of the exposure. While it's generally possible to use the shutter release button on the camera itself, a cable release or electronic remote is often used to further eliminate the risk of shaking the camera during the long exposure. The cable releases generally include a locking feature to eliminate the need to keep the button or plunger depressed during extremely long exposures. The bulb setting is useful for the following types of photographic subjects: *[[fireworks]] at night *the [[night sky]] and [[celestial object]]s (see [[astrophotography]]) *[[lightning]] *streets at night (creating streaks from moving cars)