focusing-screen frame

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• screen — n. & v. n. 1 a fixed or movable upright partition for separating, concealing, or sheltering from draughts or excessive heat or light. 2 a thing used as a shelter, esp. from observation. 3 a a measure adopted for concealment. b the protection… …   Useful english dictionary

• 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

• 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

• 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

• Nikon F2 — Photomic (DP 1 prism) Type 35 mm SLR camera Lens mount Nikon F mount Focus manual Exposure manual …   Wikipedia

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

• Camera — For other uses, see Camera (disambiguation). Various cameras A camera is a device that records and stores images. These images may be still photographs or moving images such as videos or movies. The term camera comes from the camera obscura… …   Wikipedia

• Depth-of-field adapter — A depth of field adapter (often shortened to DOF adapter) is used to achieve shallow depth of field on a video camera whose fixed lens or interchangeable lens selection is limited or economically prohibitive at providing such effect. A DOF… …   Wikipedia

• Leica Camera — Coordinates: 50°32′35″N 008°23′25″E / 50.54306°N 8.39028°E / 50.54306; 8.39028 …   Wikipedia

• Pentax cameras — This article discusses the cameras – mainly 35 mm SLRs – manufactured by Hoya Corporation s Pentax division (ペンタックス, Pentakkusu?) and its predecessors, Pentax Corporation (ペンタックス株式会社, Pentakkusu Kabushiki gaisha …   Wikipedia

• Canon New F-1 — The Canon New F 1 replaced the F 1n (an upgraded F 1) as Canon s top of the line 35mm single lens reflex camera in 1981. Like the earlier models, the New F 1 takes FD mount lenses. Although no date has ever been confirmed, it is thought that the… …   Wikipedia