An update on the Voigtlander meter. Thanks for all the posts about this issue. Tried it again, and was going to try to 'crimp' the ISO dial so that it would rub against the shutter speed dial and thus not turn so easily. However, decided not to try it - after all, it would remove a lot of the value from the meter if I tried it and it didn't work. I was surprised, and pleased, by Jem's recommendation. Was going to try one of these Leica meters (a lot cheaper than the Voigtlander!), but I assumed that after all these years the meter cells would be on their way out. Have a big Sekonic (L508) for large format work, which is excellent, but that rather defeats the object of having a camera such as the Leica - the meter is like having a second Leica body on you. No, I think I will try the Leica meter. Oh, yes - couldn't bring myself to sell the M2, so I now have a Bessa R2 as well (nice camera, by the way, though clumsy compared to a Leica).