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| p.1 #2 · Please help me debug my micro focus adjust issue |
I did autofocus microadjust (AFM) last month, on quite a few lenses and two bodies; 1DsIII and 1DIV. I also used my computer with LiveView, with the process described at the link below, which seems to be somewhat different from your process. In some cases, I used a USAF 1951 target at the 50x focal length advocated by Canon and at the site below. In other cases, I used the closer distance advocated by the instructions for the LensAlign II. Some of my adjustments were made and/or verified in good, indirect sunlight (i.e. big windows with light curtains, on a sunny day), and others were done with incandescent (halogen) lighting.
My results seemed to be very stable. I didn't do my 50/1.4, as I wanted to concentrate on my fast primes and zooms, with enough Extender combinations that I was limited by the number of cases that can be encoded in the camera.
Maybe you can get more consistent results with good, indirect sunligbht, or halogens. I don't like fluorescents.