Stereoscopy

Stereoscopy, stereoscopic imaging or 3D (three-dimensional) imaging is a technique to see depth in a photograph or movie, by looking with both eyes at two slightly different images.

One may look into a viewer or through special glasses at a screen.

Stereoscopy is used in photogrammetry[?] and also for fun.

See also: binocular vision

World 3-D Film Expo 2003 (http://www.3dfilmfest.com/)