Shutter Speed
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This is a measurement of the time your camera shutter is open, allowing light to enter and exposing the sensor to it, which creates your picture. Shutter-speed settings are typically displayed on your camera in fractions of seconds, such as 1/500, 1/250, 1/125, 1/60, 1/30, 1/15, 1/8, etc., or whole seconds, such as 1, 5, 10 or 30. Your camera may also have a 'B' setting, which is 'bulb.' At this setting, the shutter will remain open until you release the shutter button.