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telephoto lens

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noun Photography.
  1. a lens constructed so as to produce a relatively large image with a focal length shorter than that required by an ordinary lens producing an image of the same size: used to photograph small or distant objects.
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Origin of telephoto lens

First recorded in 1940–45
Also called telephotographic lens, teleobjective lens.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for telephoto lens

telephoto lens

noun
  1. a compound camera lens in which the focal length is greater than that of a simple lens of the same dimensions and thus produces a magnified image of a distant objectSee also zoom lens
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012