For me, the AF on the XT-1 with the 16-55 and 50-140 work well.
I don't shoot sports so that may be an issue. I did shoot sports with manual focus lenses 40 years ago. It does take special technique. In my view, one problem we have when moving from one camera system to another is expecting the new system to work with the same shooting techniques we used with the old. Every system has its own peculiarities that we need to understand and accommodate by fine tuning technique.
That said, if I was really into shooting wild life I'd want equipment with characteristics that were optimal for shooting wildlife. That probably isn't the XT-1 with current long zooms.





