What is a remote shutter release? In what kind of photo situation would I use a shutter release?
Answer
Anything you can use to trigger the camera shutter without touching it. :o)
Serious. It can be a remote or cable based control for your camera shutter. It's main advantage is allowing you to take shots without interfering with the camera stability, but it could also be used for shooting from awkward/distant positions or when taking shots including yourself.
Another common use of them is to do aerial photography (using R/C planes and helicopters, kites etc), where the shutter can be controlled by radio or electrical signals through a wire.
A third option, but not exactly remote, is to use automatic shutter control mechanisms based on time (those are usually available in the camera itself) or events. Using special software (for example CHDK for Canon cameras) or tethering (with a computer or using Triggertrap for example) you could make the shutter trigger whenever there is movement in the scene or with the external trigger, a change of light, time or distance intervals or some other event.
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