Archived posting to the Leica Users Group, 1998/04/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hello Dan, you wrote : > >My various lenses for my two M6s (inclusing my new HM) all show differing >deviation from perfect infinity focus, in the rangefinder. All of the >lenses seem to provide perfect focus (in my photographs), so I am not sure >if the deviation is actually meaningfull. In your case, when you say >"frankly off focus", do you mean your photographs are out of focus as well? > With the old M4 (which I send on CLA for slow speed problems also) the rangefinder was really of focus but I mean really! It was totally misalligned. For the pictures, it was not such a problem because I only use 35 and 50 mm lenses so up to 3 ft., it can be roughly OK for infinity! Suprisingly however, I took some pictures with that "misaligned M4" (as a matter of fact, the report from Leica mentions this misalignement as well as many other things such as slow speed timer defect that make the bill grow high -!) wide open with an old "crappy" 50 mm s'cron and the focus was ok! The contrast was not! It's funny that there could be such a deviation even on brand new bodies and lenses! Of course, it has to be meaningfull unless we are not using a 135! And again I'm not sure it would affect the pictures, we would have to fit a 600 mm on the M body (without a viso of course) to see something wrong on the pictures. Thanks a lot Dan, Thib.