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Zoom lens


 

A zoom lens is a mechanical assembly of lenses whose focal length can be changed, as opposed to a prime lens, which has a fixed focal length. They are commonly used with still and video cameras, some binoculars and telescopes, and other optical instruments.

See also

◄ Zoom lens: References
 

~ Table of Content ~

►Introduction
►History
►Design
►References
►See also

 

 

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