Sadly most, if not all, Epson scanners can only scan a maximum of 4x6 exposure strips of 35mm film. This parameter is set by the dimensions of the light source in the scanner lid and we just have to wear it. FWIW, using Epson Scan and trying to scan negs mounted other than in the plastic Epson masks can introduce other issues like failure to correctly identify individual frames (probably not important if you just want contact sheets) and sometimes a refusal to even recognise that film is being scanned. OzJohn