Originally Posted by Timmyjoe
I was not aware that the 50mm Dual-Range Summicron would not work on the digital M cameras. Are you referring to the new digital M's, or even the older M Monochrom CCD and M9?
And what makes them not work, do they protrude into the camera body too far?
The physical construction of the rear of the lens does not allow for the full focus range. On the M9 series it can only focus from 1m to 4m. Not sure about the M240 etc.