thank you, "kmac" for your suggestion. I did try this a while ago. I have an Epson flatbed scanner V750 with two lamps and suitable film frames or guides as they call them, to enable transperancies, negatives, 120 and 35 formats. I laid the negatives under a glass plate, removed the guides, and tried to scan. the scanning lens did not focus correctly (I guess because it is a fixed focus apparatus). I am considering locating a service which has a drum scanner. then no need to flatten the negatives.