« on: November 21, 2012, 05:41:45 PM »
with the new lens series from sigma you don´t need canon for that.
you can do it yourself.
Which means you don't need to have a camera with AFMA or software like FoCal??
Correct me if i'm wrong, but you use FoCal to estimate the error and then enter that number into the AFMA field of the camera. Now you replace the AFMA of the camera with the lens adjustment but you still need FoCal (or you just use magic lantern and jog the focus around manually).