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Anamorphic widescreen is a videographic process that horizontally squeezes a widescreen image so...

Anamorphic widescreen is a videographic process that horizontally squeezes a widescreen image so that it can be stored into a standard 4:3 aspect ratio DVD image frame. Compatible playback equipment can then re-expand the horizontal dimension to show the original widescreen image. In its current definition as a video term, it was originally devised for widescreen 16:9 aspect ratio television sets. While DVDs using anamorphic widescreen are conceptually similar to the anamorphic format used by film negatives, the two formats are implemented with different techniques. In film, an anamorphic camera lens optically squeezes the image horizontally to fit a wide image onto the rectangular area of a standard 35mm film frame. The theater projectionist then uses another lens to un-squeeze the image on playback. Anamorphic widescreen DVDs are also recorded using a horizontal-squeezing technique. If they are played on standard 4:3 television without adjustment, the anamorphic image will look horizontally squeezed; the actors will look thin and tall and a circle will be squashed to appear as a vertical oval. Changing the playback equipment to use the "fill" or "4:3 letterbox" setting will