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• Lens flare — is the light scattered in lens systems through generally unwanted image formation mechanisms, such as internal reflection and scattering from material inhomogeneities in the lens. These mechanisms differ from the intended image formation… …   Wikipedia

• Lens (anatomy) — Crystalline lens (anatomy) Light from a single point of a distant object and light from a single point of a near object being brought to a focus by changing the curvature of the lens …   Wikipedia

• lens — n. 1 a piece of a transparent substance with one or (usu.) both sides curved for concentrating or dispersing light rays esp. in optical instruments. 2 a combination of lenses used in photography. 3 Anat. = crystalline lens. 4 Physics a device for …   Useful english dictionary

• Lens — n. 1 a piece of a transparent substance with one or (usu.) both sides curved for concentrating or dispersing light rays esp. in optical instruments. 2 a combination of lenses used in photography. 3 Anat. = crystalline lens. 4 Physics a device for …   Useful english dictionary

• Zoom lens — Nikkor 28 200 mm zoom lens, extended to 200 mm at left and collapsed to 28 mm focal length at right A zoom lens is a mechanical assembly of lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed… …   Wikipedia

• Single-lens reflex camera — The single lens reflex (SLR) camera uses an automatic moving mirror system which permits the photographer to see exactly what will be captured by the film or digital imaging system, as opposed to non SLR cameras where the view through the… …   Wikipedia

• Corrective lens — A bifocal corrective eyeglass lens A pair of contact le …   Wikipedia

• Contact lens — Contacts redirects here. For the software application, see Address book. A pair of contact lenses, positioned with the concave side facing upward …   Wikipedia

• History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …   Wikipedia

• Media Lens — David Edwards and David Cromwell of Media Lens receive the Gandhi Foundation Peace Award, 2007 Media Lens is a British media analysis website established in 2001 by David Cromwell and David Edwards. Regular media alerts are issued with the… …   Wikipedia

• Digital single-lens reflex camera — Nikon D700 full frame (FX) digital SLR camera …   Wikipedia