Shutter Speed

Shutter speed is  the term used to describe the length of time that the camera's shutter is open while taking a photograph. The shutter speed and the aperture (f number) settings of the lens together determine the amount of light that reaches the film. The shutter speed also affects the way movement appears in the photograph. Shorter shutter speeds are used to capture fast moving objects, while longer shutter speeds are used to intentionally blur moving objects or to capture more light when photographing still objects. The standard shutter speeds are the following: 1/1000 s, 1/500 s, 1/250 s, 1/125 s, 1/60 s, 1/30 s, 1/15 s, 1/8 s, 1/4 s, 1/2 s, and 1 s. This is a shutter speed dial:

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