70 mm Grandeur film, also called Fox Grandeur or Grandeur 70, is a 70 mm widescreen film format developed by William Fox through his Fox Film and Fox-Case corporations and used commercially on a small but successful scale in 1929–30.FilmographyIn 1925, with the advent of television on the horizon, William Fox of the Fox Film Studio empire envisioned a "grand" cinema experience to keep the public coming to the movie theaters. As such, he soon put full efforts behind enhancing the silent 35 mm ...