Shutter Speed and Aperture

Shutter speed is how much time the film is left exposed. A fast shutter speed can capture moving objects and make it very focused, where as a slow shutter speed will capture the motion and it appears blurry.

Aperture is how wide the shutter opens, to control how much light is allowed in. The wider it is the more light can pass through. The higher the number, the smaller the aperture is. Here are some examples of photos with different shutter speeds and what apertures go with the speeds.

This is an example of slow shutter speed (1/2, half a second). While the film was being exposed, the metronome was in constant motion, and the camera blurred the motion. The aperture is small, because less light is needed. The shutter is staying open longer and so the light flows through it for more time. It doesn't need to be wide open.

This is an example of fast shutter speed. The film was only exposed for 1 two hundredth of a second (1/200). The aperture had to be pretty wide, to let in a lot of light needed. Since the shutter was open only for a very short period of time, the aperture was wide.

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