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Camerapedia Wiki
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A '''reflex finder''' is a [[viewfinder]] system with a mirror placed behind a lens. The light passing through the lens is reflected by the mirror to a ground glass. The image formed on this ground glass can be observed directly, giving a ''waist level reflex finder'' or through an redressing optical device (set of mirrors or [[Pentaprism|prism]]) for eye level viewing, giving an ''eye level reflex finder''. With a reflex finder, you can focus the image on the ground glass and frame your picture at the same time. It is common to find a device on the center of the ground glass to help precise focusing, for example a split image device or a [[microprism]] device. Today's reflex cameras usually incorporate autofocusing. The cameras using a reflex finder can be distinguished in: * '''single lens reflex''' or '''[[SLR]]''' cameras, with one lens for both viewing and taking the picture * '''twin lens reflex''' or '''[[TLR]]''' cameras, with one lens for viewing and one lens for taking the picture [[Category: Viewing system]] [[Category: Focusing system]]
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