There was a pretty major improvement in AF performance with all the X-series cams with the latest firmware update on the 23rd. There was definitely an increase in speed, but the biggest improvement came in indoor target acquisition, IMO...I used to miss a fair number of shots indoors due to AF failing to lock on. The latest firmware for the X-E1 (and the original FW for the X-M1) fixes this issue, and now I have AF locking failure on par with pretty much any other camera I\'ve ever owned...that is, very rare.
