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70 mm Grandeur film, promoted as Fox Grandeur, was a 70mm widescreen film format developed by the...

70 mm Grandeur film, promoted as Fox Grandeur, was a 70mm widescreen film format developed by the Fox Film Corporation and used commercially on a small scale in 1929-1931. It is technically very similar to the Todd-AO 70mm system, marketed from 1955 and still in limited use (albeit with significant modifications) today. The main differences were that Grandeur had a four perforation pulldown (i.e. each frame occupied the height equivalent to four perforations on the film) rather than the five of Todd-AO, and that it used the Fox Movietone variable-density optical sound-on-film system. A small number of shorts and features were produced in Grandeur. These included several issues of Fox Movietone News called Fox Grandeur News first shown May 26, 1929. Features shot in Grandeur include Fox Movietone Follies of 1929, the musical Happy Days (1929), directed by Benjamin Stoloff, and the Western The Big Trail (1930), directed by Raoul Walsh, in which John Wayne played his first starring role. Filming of The Big Trail began in April 1930. The film was shot simultaneously in Grandeur and conventional 35mm film. Both versions survive, and differ significantly in composition, staging and