Originally posted by sagiboy Guys, do you think my M200 would be a good candidiate for this 'reverse lens macro' project??? Should I get a reverse ring and mount the ring and the the camera reversed and I'm good to go???
The lens will work, reversed. With an M lens (or anything but a DA) you have an aperture ring, so you can control the f-stops. Personally, I find 200mm a bit long for comfortable use, reversed. It's still a 200mm lens. Your working distance will be under 50mm / 2in. Your DOF will be very thin.
Mount-reversal rings are cheap, like around US$5, so experimentation won't be costly. And you could use that adapter with cheap step-rings, to reverse lenses with smaller front threads. I say, GO FOR IT!