Along the same line-of-thought as my last movie trivia puzzle, here’s another:

In an effort to counter Cinerama, this studio developed this format, in which they filmed this “swords and sandals” epic. However, the format was not fully appreciated in the film’s blockbuster roadshow premier, as few theaters could accommodate this aspect ratio.

Extra Credit: As the above mentioned film wasn’t ready to shoot, the above mentioned studio chose to first do this totally forgettable film, from which some of the scenes were used in this Cinerama epic.

Update: Congratx to reader Atlanta Lawyer, who got it all right off the mark. (see comments).