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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
- Industry/Domain: Photography
- Category: Lenses; Photography techniques
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The part of the body that cannot be reached (to scratch), usually the space between the shoulder blades.
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