I have a Coolscan 8000 scanner and I use it to mostly scan 135 and 120 format film. Nowadays I also shoot some panoramic 135 film using my Mamiya 6; 24x65mm. I don't want to invest into the ridiculously expensive FH-869GR rotating glass holder though that would probably do the job just fine - one frame at a time! I've been using the FH-869G glass holder instead. I've made some masks out of black cardboard that I use for masking the perforations on 135 film, otherwise there is too much light leak coming from the perforations which ruins the scan. I've been quite successful and I'm thinking of ways to improve my masking technique. For example getting some rigid, black plastic sheets and taping them into each side of the film strip, or even cutting some kind of 2-layer black plastic mask thing that allows me to slide in the strip and have the perforations covered... I've used Vuescan for scanning and I've told it I'm using 6x7 film, which works OK from software point of view. Auto exposure might not be correct, but it's not that much of a problem for color negatives. Anyway here's the question, I don't always write as clearly as I should but please try to read it anyway However those cardboard masks are very fiddly and not something I would like to mess with frequently. A thought occurred to me: if I buy another FH-835 35mm strip film holder, and break/file/chisel away the between-frame tabs, and then modify the holes (using a drill etc.) in the beginning of the holder that make the scanner recognize the holder as a 120 film holder - would this work? Probably auto exposure is going to be even more messed up, but maybe that can be managed using the analog gain settings. Has anyone else ever considered doing this? One problem that comes to mind is that if software assumes it's the 120 holder, will I be able to use the full scanning width? The FH-835 strip film holder is wider in the scanning area than the 120 holder. I'm not scared of spending some money trying this out, but I wouldn't want to break my scanner. I guess there's not too much risk of that, is there?