When I bought the camera at a flea market it still had an unexposed roll of 120 film in it. Unfortunately, it was a long outdated Agfa CNS film which needs special (expensive!) processing. Therefore, I decided to see what would happen if I just shot 16 pictures with it and then had it developed C41 at my local warehouse HEMA which develops 120 film. The backing paper had stuck to the film quite badly leaving a lot of speckles and the colours turned out "somewhat psychedelic" ;-)