I've been shooting digital for about 3 years after a 20 year hiatus. I like it, but it's missing something - not so much visually, but I miss the mystery and processes and experimentation and permanence of film, so I'm considering getting back into shooting black and white film. I'm too nomadic to even consider setting up a full darkroom, I doubt scanners appreciate getting thrown around in cargo on multi-thousand mile trips, and I'd like to get into trying out a hybrid approach to photography for minimal cost, so I'm considering using my existing m4/3 camera as a negative "scanner" with a self-made lens/negative carrier/strobe rig. I'm certain I can tinker my way into acceptable results from 35mm negs, but what about smaller formats? I'd like to shoot Minox (9mm film) again. I really don't know much about macro photography, but the way I see it, I'd need a magnification of about 1.4x to fill the 17x13mm sensor frame with a 8x11mm film area. Can I just pop extension rings on to get the magnification that I need? I know at that magnification DoF is razor thin, so having the film be flat and parallel to the sensor is essential. Are there any pitfalls or complications beyond regular DSLR scanning that I need to consider?