Quote Originally Posted by NFLD Stephen View Post
How did you find FoCal? I gave it a try ~1year ago when I first got my 7d and found it much simpler than trying to afma the old fashioned way...

I'm actually going to set up again and redo the calibration on my lenses. I'm wondering if the microadjustment could have changed (maybe bumping the camera/lens around could change it a bit?). Does anyone regularly re-check afma or is it just not necessary (unless obvious problems are noted)?
I do re-test periodically. I dropped my 5DII one day - camera worked fine afterward, but all my AFMA values shifted 8-10 units in the same direction, so I infer that the drop altered the relative positioning of the image and AF sensors.