With a 6x12 format you won't be enlarging all that much, if at all, so you may as well use a faster film. The natural softness of a pinhole image will outweigh any grain issues. If you need long exposures, use slower film. I mostly use Delta 400 at EI 200 for my roll film pinholes.
I'm probably going to try faster films too. I have a few rolls of Fuji Neopan 400 which has a relatively fine grain.
Originally Posted by John Koehrer
There are several pinhole sites out there with lots of information. f295, pinhole resource & others. F295 has an active group like APUG.
Yeah, there are lots of sites. I have still few days before my camera arrives so I'll google and do research during the weekend.