While adding a backdrop to The Master, I noticed that the required dimensions are 16:9. This struck me as odd, considering that it would require shots from some beautiful films shot in a 16:10 aspect ratio to have to be cropped to fit the requirement. It's not really a big deal though, and I figured there must be some reason that 16:10 is unacceptable, perhaps how it jives with Letterboxd's (and other websites') coding. Anyway, just interested if anyone knows why.