- retrofocus lens
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/re"treuh foh'keuhs/a wide-angle lens, for use on single-lens reflex cameras, of inverted telephoto design, with a back focus greater than the focal length.[1960-65; RETRO- + FOCUS]
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Universalium. 2010.
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Universalium. 2010.
retrofocus lens — /re treuh foh keuhs/ a wide angle lens, for use on single lens reflex cameras, of inverted telephoto design, with a back focus greater than the focal length. [1960 65; RETRO + FOCUS] … Useful english dictionary
Lens speed — refers to the maximum aperture diameter, or minimum f number, of a photographic lens. A lens with a larger maximum aperture (that is, a smaller minimum f number) is a fast lens because it delivers more light intensity (illuminance) to the focal… … Wikipedia
Angénieux retrofocus — Infobox lens design scheme = Retrofocus.svg year = 1931 (cine) 1950 (stills) author = H. W. Lee of Taylor, Taylor and Hobson (1931) Pierre Angénieux (1950) elements = 1+(4..5) aperture = f/|2.5The Angénieux retrofocus photographic lens is a wide… … Wikipedia
Wide-angle lens — In photography and cinematography, a wide angle lens is a lens whose focal length is substantially shorter than the focal length of a normal lens for the image size produced by the camera, whether this is dictated by the dimensions of the image… … Wikipedia
List of lens designs — * Achromatic doublet * Apochromatic doublet * Biconcave lens * Biconvex lens * Convex concave lens * Celor lens * Chevalier lens * Cooke Triplet * Dialyt lens * Double Gauss lens * Doublet lens * Eyepiece * Field lens * Fisheye lens * Fresnel… … 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
Telephoto lens — Portal|Photography|Large format camera lens.jpg created by a telephoto lens is the same as that created by an ordinary lens of the same specified focal length. Construction If a camera lens were to be constructed from a single lens of 200 mm… … 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
Photographic lens — A photographic lens (also known as objective lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media… … Wikipedia
photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… … Universalium