What happens if...
I have an M7 and a CLE. Presently I share that wonderful little 40mm Rokkor between the two. I have taped the Leica frame line selector switch so the 35mm frame lines appear. I am thinking of having the Rokkor modified so it will pull up the proper frame lines without the tape. But, if I do that, what will happen when I put the 40mm back on the CLE? I use the CLE as a backup, but if it pulls up the 90mm or 28mm frame lines that would be a problem, unless someone knows a way to manually select frame lines on the CLE. Thanks