I mean... is the film too thick to fit in an ordinary 4x5 film holder? It'd be awesome to not have to shell out an absurd price for a pretty basic piece of plastic. I'm guessing that it won't work, but I just haven't seen this question posed before, so why not?! Oh, and also, using the FP-100C45 or FP-100B45 Fuji Instant Peel-Apart films, if I did get a Polaroid 550 back, what about the rollers? Can I bypass them or will it not affect things either way? Thanks so much! Chris 'holmburgers' H.