John Shriver
Well-known
The exact start point of the threads on the lens and mount isn't well-controlled. As they wear, the lenses screw on "further".
I think the source (for different pitch) was the post-war military report on the Leica factory. Can't find it at the moment.
I think the source (for different pitch) was the post-war military report on the Leica factory. Can't find it at the moment.
