Back on track here... Before I went off to Cuba, the owner of the kit that I'm interested in, let me play with his 500CM, and three lenses. It was quite lovely to use handheld (prism attached, and hand grip). I ran a roll of FP4 through it, which came out nicely exposed, and developed. Sadly, pretty much all the frames were slightly blurry, as it was an overcast day (typical for this time of year), and no tripod. Still, it was fun to cycle through the lenses, and fire the shutter. I would say that sound is way sexier than my RB...