variable aperture

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• aperture — ► NOUN 1) an opening, hole, or gap. 2) the variable opening by which light enters a camera. ORIGIN Latin apertura, from aperire to open …   English terms dictionary

• aperture —    An opening. In photography, the circular hole in the front of the camera lens which controls the amount of light allowed to pass on to the film from the lens. On all but very inexpensive cameras the size of the aperture is variable. The degree …   Glossary of Art Terms

• Aperture — F/A/V A variable opening inside a lens that regulates the amount of light reaching the image plane. Also known as an iris. (Camera/Lighting) PP A variable opening in a camera lens to control the amount of light that hits the film or image sensor …   Audio and video glossary

• aperture — [ apətʃə, tj(ʊ)ə] noun an opening, hole, or gap. ↘the variable opening by which light enters a camera. Origin ME: from L. apertura, from apert , aperire to open …   English new terms dictionary

• aperture — n. 1 an opening; a gap. 2 a space through which light passes in an optical or photographic instrument, esp. a variable space in a camera. Etymology: L apertura (as APERITIF) …   Useful english dictionary

• Mira variable — Mira variables (  /ˈmaɪr …   Wikipedia

• Estrella variable Mira — Imagen de Mira en luz ultravioleta, en donde se aprecia el rastro que deja la estrella. Una variable Mira es una estrella variable pulsante caracterizada por un color rojo intenso, un período de pulsación de más de 100 días, y una amplitud de más …   Wikipedia Español

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• Condenser (microscope) — A condenser is one of the main components of the optical system of many transmitted light compound microscopes. A condenser is a lens that serves to concentrate light from the illumination source that is in turn focused through the object and… …   Wikipedia

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