automatic diaphragm

См. также в других словарях:

• Diaphragm (optics) — A 35 mm lens set to f/8; the diameter of the seven sided entrance pupil, the virtual image of the opening in the iris diaphragm, is 4.375 mm In optics, a diaphragm is a thin opaque structure with an opening (aperture) at its center. The role of… …   Wikipedia

• automatic advance — A mechanism which adjusts the ignition advance by means of centrifugal weights or by a diaphragm controlled by intake manifold vacuum …   Dictionary of automotive terms

• 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

• 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

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• Zenit (camera) — This article is about the Russian camera brand. For the astronomic or geodetic instruments directed to the zenith, see Zenith camera. : For other uses, see Zenit (disambiguation). Zenit is a Russian (and formerly Soviet) camera brand manufactured …   Wikipedia

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

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• Arthur Constantin Krebs — (November 16, 1850 in Vesoul, France ndash; March 22 1935 in Quimperlé, France) was a French officer and pioneer in automotive engineering. Collaborating with Charles Renard, he piloted the first fully controlled free flight made in the French… …   Wikipedia