Notched or broken edges
The reference edge for the film in horizontal direction is part of the roller design. The film travels on the roller through the gate and is kept in position by the reference edge which is part of the deck side roller in the film gate. As the film is firmly sitting on the rollers and the references edge is quite long Scanity tolerates notches and broken edges very well. A very helpful feature is to have the option of lacing the film horizontally flipped and than flip back the image electronically.