Great! I am planning to use the lenses reversed to go about 7x life size upwards, so the lens mount isn't important. I'll look for books but most of the stuff my preliminary search at my university library turned up was hopelessly technical for me and about motion picture stuff. Any comments on sharpness of these lenses - some seem to be quite cheap on EBay but I guess I am unaware of some brilliant lenses simply because I've never heard of them.

Another question, what is the film to flange distance for these cameras? I ask because for reversed lenses that is usually the working distance for macro photography.