afocal lens

  • 21Aperture — For other uses, see Aperture (disambiguation). f stops demonstrated on a lens …

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  • 22Rangefinder camera — A Foca camera of 1947 at the Musée des Arts et Métiers in Paris. A rangefinder camera is a camera fitted with a rangefinder: a range finding focusing mechanism allowing the photographer to measure the subject distance and take photographs that… …

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  • 23Movie projector — This article is concerned with technical aspects of moving film projection. For non film movie projection, see digital cinema. For historical aspects, see the article history of cinema. 35 mm movie projector in operation …

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  • 24Teleconverter — A teleconverter is a secondary lens which is mounted between the camera and a photographic lens. Its job is to enlarge the central part of an image obtained by the objective lens. For example a 2 times; teleconverter enlarges the central 12… …

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  • 25Depth of focus — For the seismology term, see Depth of focus (tectonics). Depth of focus is a lens optics concept that measures the tolerance of placement of the image plane (the film plane in a camera) in relation to the lens. In a camera, depth of focus… …

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  • 26Digital versus film photography — has been a topic of debate since the invention of digital cameras towards the end of the 20th Century. Both digital and film photography have advantages and drawbacks.[1][2] 21st century photography is dominated by digital operation, but the… …

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  • 27Portal:Photography — Wikipedia portals: Culture Geography Health History Mathematics Natural sciences People Philosophy Religion Society Technology …

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  • 28Film speed — is the measure of a photographic film s sensitivity to light, determined by sensitometry and measured on various numerical scales, the most recent being the ISO system. A closely related ISO system is used to measure the sensitivity of digital… …

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  • 29Infrared photography — Top: tree photographed in the near infrared range. Bottom: same tree in the visible part of the spectrum …

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  • 30Digital photography — Nikon D700 a 12.1 megapixel full frame DSLR …

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