Definition:
1. An aperture setting on a lens.
2. A comparative measure of exposure. Each one-stage change of the shutter speed or aperture (for example, from 1/60 to 1/125 or from f/2. 8 to f/4) represents a stop and doubles or halves the amount of light reaching the film.
3. See stop down.
Definition: aperture of a camera or enlarging lens.
1. An aperture setting on a lens.
2. A comparative measure of exposure. Each one-stage change of the shutter speed or aperture (for example, from 1/60 to 1/125 or from f/2. 8 to f/4) represents a stop and doubles or halves the amount of light reaching the film.
3. See stop down.
Definition: aperture of a camera or enlarging lens.
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