I used the Fujifilm X-M1 with the Minolta lens (f1.7/50) to make this picture of the Fujifilm X-T1 with the Fujinon 18-55mm lens.
The Fujifilm X-T1 with the new processor and x-trans sensor is one of the best high-end mirrorless camera on the market (2014). More and more professional photographers using the X-T1. Amazing sharpness, best ISO handling, Wifi, good focus speed and focus tracking. Great for portraits, events, outdoor, food and product shots.
You should not buy the X-T1 if you are in the sports business or you like to work in the automatic mode or different programm mode (sun, night, indoor, snow, etc...).
Here you can read a good comparison of the X-E1 (the old one) vs. Nikon D800. Below a short summary: