Is your 12-35 soft?
Hmmm, I thought the overarching point was that many things can contribute to the perception that you may have a "bad copy," when in fact, you don't. But maybe I need to re-read it, as it has been a few months since I did.-- hide signature --
Yes, that's true. It's just that the main thing that article is emphasizing (focusing calibration for lenses and bodies) is only relevant to PDAF systems.