I have a new matboard pinhole camera that I'm having fun with. I made it to use paper negatives, which I like very much for a number of reasons, and that will be the main use. Still, it would be fun to try to use film in it at some point. I was thinking of trying to use something I could develop under a red safelight. The options seem to be: Arista Ortho Litho, Ilford Ortho Plus ( a bit expensive ), green x-ray film or blue x-ray film. I would be contact printing them if that makes any difference ( e.g. not sure if that would matter with the emulsion on both sides of the x-ray film. ) I like the "ortho" look, and I also like the even more old fashioned look of film that is mostly blue sensitive. Any opinions or advice as to which of these might be a good choice? Any experience using them in pinhole? Am I going to run into extreme reciprocity differences between the middle and edges?