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Ultra Panavision 70 and MGM Camera 65 were the photographic marketing brands — ca. 1957 to 1966 —...

Ultra Panavision 70 and MGM Camera 65 were the photographic marketing brands — ca. 1957 to 1966 — that identified movies photographed with Panavision-brand 65mm and 70mm anamorphic lenses. The image frame dimensions and the six-track stereophonic soundtrack configuration of Ultra Panavision 70 were virtually identical to those of the 1955 version of the Todd-AO 65mm and 70mm photographic processes, however, the lenses incorporated a 1.25x anamorphic compression, yielding an approximate, ultra-wide projected aspect ratio of 2.76:1. Initially, Panavision and Metro-Goldwyn-Mayer developed the anamorphic lenses to photograph the films Raintree County (1956) and Ben-Hur (1959), which were advertised as MGM Camera 65 process films. In the 1950s, the MGM studio developed the Camera 65 widescreen film format as a single-strip Cinerama substitute, however, Raintree County and Ben-Hur were projected on rectangular Cinemascope screens, not the curvilinear (concave) screens of the Cinerama and Todd-AO formats; thus, the Camera 65-format film Raintree County was projected as a 2.35:1 reduction print, while Ben-Hur was the first Camera 65-format movie projected from a full, 70mm-frame. Using