Definition of Term- the length of TIME that the camera shutter is open, as measured in seconds or fractions of a second.
Extended Definition
- What is a shutter?.....A shutter is a device that allows light to pass for a determined period of time, for the purpose of exposing an electronic sensor to light to capture a permanent image of a scene.
- "Shutter speed" then refers to the length of time that the shutter is open for. A slow shutter speed allows more time for light to enter- giving you more light. A faster shutter speed does not allow as much time to let light it- giving you less light.
- If we were to use our eye example again, think of the shutter as your eye-lid. Shutter speed refers to how long your open your eyes for.
- Shutter speed also controls how motion is captured. If you capture a moving subject with a fast shutter speed, it will freeze the action- giving you a crisp, clear image. If, however, you photograph that same moving subject with a slow shutter speed, your subject will appear blurry.
Shutter speed controls: - - Exposure (how much light is let in)
- - how MOTION IS CAPTURED
Study Guide Resources

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