Quote Originally Posted by winger View Post
What format would have made an image 83mm by 140mm? Those frames were shot in 1912 and really look like they had been on a roll based on the crookedness of some ends (making the film about 90mm wide?) I think there's a roll film holder with the RB Auto-Graphlex?
That is 3A (postcard) format, which would have been shot on 122 rollfilm. 3A was 3.25" x 5.5" image size, which translates to 82.5mm by 139.7mm. The film stock is 91.75mm wide. Kodak discontinued that size in 1974, more or less, but there's gonna be more of it in September... (see this thread).