I owned one.
very very sharp, as sharp as the Nikon Fl (which I now own). Does need the Tap in console and set aside a day to fully calibrate the focusing.
Fantastic image stabilisation
I switched to the Nikon because the af-c performance wasn’t quite as good as I’d have liked, this was on a D810 though. I spent (wasted) a lot of money changing and if I wasn’t such a ocd perfectionist is still have the Tammy.
money