Two views of the 6 x 6 cm film back/magazine. On the right, the dark slide is in place and can be seen across the opening. This
permits switching films between shots which is fun to be able to do. I have only acquired 120 size, as that offers the widest
range of emulsions; there is a 220 back, and also backs for 6 x 4.5 cm format on 120, as well as backs for 35 mm and Polaroid film.