Autofocus performance is hard to quantify, but it is without a doubt the highlight of the A6000. Sony's spread the main imaging sensor with embedded phase-detect AF sensors, almost all the way to the edge. This means not only can the A6000 confidently track subjects approaching or receding, but from virtually anywhere on the frame. Compare this to most other cameras, DSLR or hybrid mirrorless, which concentrate their phase-detect AF sensors towards the middle of the frame.And it really works too. I successfully tracked cyclists speeding towards me, along with my kids scootering around playgrounds with ease, and best of all the AF system continued to operate confidently even when shooting at the top burst speed of 11 fps. Couple this with a decent buffer that can capture several seconds of action at this speed and the A6000 quickly becomes one of the best choices for action shooting at this price-point, regardless of camera format. It's exciting not only to see the A6000 out-perform any other mirrorless camera in this regard, but also take on DSLRs at this price point which typically only shoot at 5fps and only track subjects near the middle of the frame, and also only when composing with their viewfinders. Only the Canon EOS 70D can compete with the A6000 for continuous AF in Live View, but it costs at least 50% more and only shoots at 7fps. (Although it does have a much more useful fully articulated touchscreen).