How to Digitize Films Using a DSLR and the Digitaliza Scanning Mask | If you're new to scanning and digitizing negatives, here's an easy setup that you can do with a box,
Lomography DigitaLIZA 35mm Scanning Mask - Focal Point Photography
Lomography DigitaLIZA 35mm 135 Film Scan Scanning Mask - Updated Version | eBay