Would you mind clarifying, or elaborating a bit on the AF tracking performance of the A55?
You wrote, “ According to Sony it can track a moving subject at between 30-40 MPH while shooting 16MP stills at 10 FPS. When shooting 1080P video it can continuously track a moving subject at up to 50 MPH. I'm not usually given to hyperbole in these reviews, but this is a stunning capability, and has to be experienced oneself to be really appreciated the breakthrough that it represents!”
Did you reach the same conclusion after using the camera, or is this Sony hyperbole?
“ The A55 has a newly developed 15-point AF system with three cross type sensors. This is a nice step up from previous Alpha AF systems but in my brief testing doesn't appear to be quite up to the continuous phase detection autofocus system discussed elsewhere in this report. “
Are you referring here to the issue of phase detection only working with the lens wide open, or is it lacking in other areas?
I ask because in the dpreview review, they talked about being disappointed in the AF tracking performance, saying it was almost always slightly behind the action.
It would be a great dual purpose (or single purpose) camera for many people if the AF tracking was as good as Sony says it is. It sounds like it would at least be equivalent to the D3s for stills. Perhaps expecting it to match a camera like the EX1 with its smaller sensors it too much, but it would be very interesting if it could do this. (I mention those two because I use them and know you also have them).
Thanks very much,