Tip #6,797 14 people found helpful 1 List

In photography, exposure relates to two factors: aperture or iris controls the amount of light transmitting on the film or sensor plane, while the shutter speed controls the duration of light transmitting on the film or sensor plane. These factors are reciprocal, meaning if you adjust one you must adjust the other to compensate for proper exposure. Changing the aperture affects depth of field or what is sharpest in the picture. The shutter speed affects the movement of the subject being photographed.

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