Definition: A camera accessory used in close-up photography to increase the distance between the lens and the film, thus allowing you to focus on very near objects. Extension tubes are metal tubes that can be added in different combinations between the lens and the camera to give various increases in lens-to-film distance. Extension bellows are continuously variable between the longest and shortest extension. Bellows are considerably more cumbersome than extension tubes and must be used with a tripod.
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Thursday, March 20, 2008
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