At f1.4 and f1.8 on my XT-1, I could not quite trust without checking if the AF had quite nailed it precisely.
Even without battery grip, without boost mode, the XT-2 grabs the tiny AF point I've set like a hawk.

Which I needed it to, as the light here emerged from behind a cloud just when I needed the shot, and when I needed the AF point to hit the centre stalk on the dry bouquet thing.

Ahhhh: the pleasure I used to have with taking photies is a-returning... I went for Classic Chrome here.