Revolog makes a rather unique range of film, all pre-exposed prior to being sent out. This is a great creative idea, and while I love the thought of shooting this film, it's $20 per roll - and worst, it's only available in 100 speed. So how would I go about making this type of film myself? Is it just a mater of building a box that will pre-expose the film, perhaps a rotating drum with a design on it to expose the film, add light, then just drag the film across? I also happen to have a couple 35mm disposable cameras with ghosts in the background, I presume made the same way. It's great fun to shoot during holloween time. Thoughts? I'm especially interested in their 420nm and 600nm and texture effects.