Frame Viewfinder

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 It might be outdated or ideologically biased.

Frame Viewfinder

 

an optical device for determining picture boundaries in still or motion-picture photography. The device consists of two frames of different sizes spaced a certain distance apart. The boundaries of the object being photographed are determined by aligning the contours of the frames in the observer’s field of view; the common contour of the frames is the boundary of the picture area.

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