| Kenneth G. Wilson (1923–). The Columbia Guide to Standard American English. 1993. |
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| zoom lens (n.) |
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| This term, from motion picture camera and projector jargon first but then adapted to still cameras and binoculars, has now become Standard, at least in its literal technical senses: a zoom lens is one whose focal length is continuously and rapidly adjustable so that it can magnify continuously, enlarging the image without losing focus. | 1 |
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| | | The Columbia Guide to Standard American English. Copyright © 1993 Columbia University Press. |
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