Ok, here is the deal. I have a Beseler 23CII that I have a color head on; the Dual Dichro S. It's set up to expose 35mm; it has the silver "tunnel" tube going from the light source to a diffusion chamber that's more focused for 35mm. To use it for MF up to 6mm x 9mm you take out the tunnel to allow the light to disburse more and replace the diffusion chamber. I'm planning on shooting a Holga WPC pinhole camera that makes 6X12 negs and I don't want to dismantle that thing and convert it back to MF everytime I want to print so I'm wondering how much fall off will I get? I am also getting a 6x9 negative carrier that I'm going to widen. If that doesn't pan out, I'm going to try and just make a custom neg carrier. In any case, do you think that the fall off will be really really bad? I dont' have any MF negs to try it with to see. My other option is to contact print them but that's a pretty small print and I wanted to have the option of enlarging them at least some.