None. But, I can only say that as of now. After more than 3 decades of shooting 35mm and 7 years of 120, I finally threw in the towel and donated everything that involved roll-film to a local cancer charity. I now call it . . . "Spring Cleaning gone Wild!" But worry not. You'll need a heavy-duty crowbar to pry the sheet-film holders from my cold dead hands. When that time comes . . . of course.