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The aperture is the opening formed by the blades of the iris or diaphragm in the lens, through which light passes to expose the film. Aperture size is usually given in f-numbers, the larger the number, the smaller the opening. Aperture size together with shutter speed determine the amount of light falling on the film (exposure). The aperture is sometimes called the "stop".

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Μέρος του λόγου: noun
Συνώνυμο(α):
Blossary: A Glossary of Photographic Terms
Κλάδος/Τομέας: Photography
Category: Lenses; Photography techniques
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measurable diameter of the diaphragm divided by the focal length of the lens in use and expressed in terms of "f" numbers, marked on the lens barrel.

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Photography; Lenses; Photography techniques

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Photography; Photography techniques

The area of a scene that a lens can cover. The focal length of the lens determines the angle of view. A wide-angle (short-focal-length) lens includes more of a scene than a ...