Quote Originally Posted by AgX View Post
I consider this an internet myth.
As an experienced user of old cameras, and an owner/user of a Canon clone of the Leica III I can assure you it is no myth. At best, you won't know what speed you are setting. At worst, you'll screw up the release for the second curtain and/or damage the index pin on the shutter dial and have an untrustworthy shutter until it's repaired.