A photo file index print is a contact sheet that displays a small, positive "thumbnail" version of every image on a photographic roll, such as an APS (Advanced Photo System) film cassette. Each thumbnail is numbered to correspond with its frame on the film, making it easy for photographers and clients to identify and order reprints or enlargements.
Index prints are a practical tool in both professional and amateur photography, helping organise images efficiently and streamline workflow. They provide a quick visual reference of an entire roll of film, saving time when selecting favourites for printing, editing, or archiving.