the af-s of the x-e1 is a lot better than the x-pro was pre-firmware upgrade. i assume the x100 was the same.
the af-c is still a joke, but it is on the m 4/3 cameras too. the only mirrorless cameras with decent af performance in my opinion are the ones with hybrid phase detect sensors embedded in the sensor, a la the nikon 1 and i think one of the latest NEX.
the 75 f/1.8 is almost reason by itself to get an m4/3 camera! (almost)
Thanks for the info. And you hit the hammer on the head, the 75mm f1.8 is a superb lens. It's rendering seems to be like that of a Nikkor DC (I have the 105mm f2 DC). Very tempting lens ...
Edited by Luc de Schepper, 19 November 2012 - 21:58 .