I recently bought and use a Mod54 holder (www.MOD54.com) onto which fits up to 6 sheets of film (into slots) a clever design, easy to load. The holder then inserts into a Paterson type film tank one uses for 120 & 35mm.

To fit, the film does not sit flat, but curved- emulsion side in, the inner sheet of film being the most curved. This is the only method I have used to process 4x5 film, my question is, does the fact that the film is curved have any impact on the action of chemicals on the film surface. As against where the film surface is flat.

Thanks for any comments
Peter