tele-photographic lens

telephoto lens

noun Photography.
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.
Also called telephotographic lens, teleobjective lens.


Origin:
1940–45

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
telephoto lens (ˈtɛlɪˌfəʊtəʊ)
 
n
See also zoom lens 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 object

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