Anyone remember Vista Vision?

I remember being amazed at some of the movies made in Vista Vision. some of the theatres had to add extensions to their screens, in order to show the“wide movies”. by extending the screens in width, it left a black margin at the top and bottom of the theatre screen. kind of like your television, when a movie is not broadcast in HD and there is also a black margin on each side of your tv picture. so, who remembers Vista Vision? can you name some of the very first movies that were filmed in Vista Vision?