I've noticed that there are many films that were shot "full-frame", 1.33:1, yet are matted for a different exposure when viewed by the audience (1.66, 1.78, 1.85, etc.) for good reasons, I'm sure. My question is: How do you know when a film has been shot at 1.33:1 and, therefore, has more coverage when seen that in that framing, as opposed to being "cropped" and matted for a wider framing? Stanley Kubrick films like "The Shining" come to mind, where you actually see more in 1.33:1. Is there a simple way to determine which other films are like that without having been a part of the production? Thanks to anyone who answers.