[Leica] Focus Calibration

["Frank Filippone" <red735i@worldnet.att.net>]

For a RF camera, if the Slides look a bit out of focus using a variety of
lenses, we can assume the body RF is out of RF focus calibration. 
Especially if the same film, same lenses different body produces
substantially more in-focus images.......How is the adjustment done to
correct this?

There are 2 parts to this question, first the camera adjusting screw(s) and
then second methodology.....

Cameras are M3, M4P, and M6.  Where is the adjusting screw(s)?

Methodology: What do you use as a correct measurement of distance to the
subject to calibrate the body against?  An inserted focal plane ground
glass?   Are there any technician types out there that can answer this
question?


Thank You
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Frank Filippone
red735i@worldnet.att.net