The Basics of Shutter Speed
Shutter speed is the amount of time that a camera's shutter is open. It determines how long your camera's sensor (or film in the old days) is exposed to the light coming through the camera lens. It is one of the three things that determines the exposure of your photograph - the other two being aperture and ISO. Larry Becker from B&H does a nice job of explaining shutter speed and how it impacts your images. Take a look...
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