GW690 uses 120 or 220 (1mm wide) films.
When I looked the inside of the film cavity, I found the bottom spooler holder can actually be pushed out a little, should be more than 5mm. I wonder if this makes it possible to use 65mm movie film on 116 spoolers, such as Kodak Vision 3 65mm color negative 250D?
I am going to find some 116 spoolers to check it for the first step. The eally try it with real film will be expensive as the minimum roll is 400ft, cost $700.