асфералық линза

асфералық линза

A lens with a curved, non-spherical surface. Used to reduce aberrations and achieve a more compact lens size. With a spherical lens, rays travelling from the lens periphery create the image before the ideal focal point and give a blurred image centre. With an aspherical lens, even the rays travelling from the lens periphery converge at the ideal focal point, thus producing a sharp image.

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Blossary: A Glossary of Photographic Terms
Κλάδος/Τομέας: Photography
Category: Lenses; Photography techniques
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Eyewear; Optometry; Contact lenses; Eye surgery

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Photography; Professional photography

optical element made of glass or plastic and capable of bending light. A lens may be constructed of single or multiple elements.

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Photography; Lenses; Photography techniques

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, ...

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Photography; Lenses; 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 ...

көру бұрышы

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 ...

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