Universal Viewfinder

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Universal Viewfinder

 

a telescopic sight that consists of an eyepiece and several lenses mounted on a rotating turret. Universal viewfinders are used in still and motion-picture cameras equipped with range finders and interchangeable camera lenses. The focal lengths of a universal viewfinder’s lenses are proportional to the focal lengths of the interchangeable lenses, so that the angle of the viewfinder’s field of view is equal to the angle of the image field of the corresponding interchangeable lens.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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