I rented both the Fujinon 56mm f1.2 and 55-200 for a couple days to do both a wedding and the High School State Football Championships. I used the zoom and the 56mm down on the field to see how the autofocus performed as well as how versatile the camera was as a sports shooter. My standard kit is a 7D and 200/2.8 L prime. This shot is with the 56/1.2 @ f2.8 and ISO 1600. The noise is noticeable at 100% and in crops, but I'm generally much happier with the look and performance of the X-T1 at high ISO over the E-M1. I don't think there's actually less noise overall but there's almost no chroma noise unlike the E-M1 and I think that's what makes all the difference. You still loose detail with the X-Trans sensor, even at ISO 1600 (it isn't an A7s after all), but it performs better in more situations and the RAW files are generally more maleable than my 7D (not saying a whole lot, I know). I think I'll write up a blog post on my experience with the X-T1 in a very demanding sports environment (albeit in an NFL stadium with proper lighting; a far cry from the conditions I usually shoot high school football under!). It obviously doesn't perform the same as the guy standing next to me with the Nikon D4s and $10k telephoto lens. But it's still a very capable all-around camera. I haven't decided yet whether to look toward the 40-150/2.8 zoom for the E-M1 or the 50-140/2.8 for the X-T1. It's really going to come down to autofocus performance and overall IQ. I would call the E-M1 a fast focuser in single-point mode but using it in continuous mode and with tracking I didn't see a tremendous difference in performance in favor of the E-M1. The E-M1 has a tendency to miss just like the X-T1 (though both will miss less than my 7D actually). The 55-200 is not a fast focusing lens (I expect the 50-140 to be miles ahead in this department) and yet it was still usable. Again, it's not a 1D or a D4 but the gap is much narrower than one might assume given the specs on paper. It doesn't make that wonderful "whirring" sound when you hold the button down since it doesn't do 12fps, but for what I generally shoot, it seems to be getting the job done. The E-M1 autofocus could be very good if one didn't rely on tracking and between-frame autofocus. If the 40-150 was fast enough to focus with single-point mode, then you could use the highest 10fps setting and shoot very brief bursts by pressing the trigger often, rather than holding it down and tracking the action. In my tests so far the X-T1 won't focus that fast. I may just have to wait a while now, though. I imagine I'll be shooting some basketball games before long so I may just have to rent them both and see how they perform. Football season is over for us now, so there's no more of that to shoot this year. Too bad.