5D Mark II Auto Focus is awesome!
OK, I now have to say that the AF in the 5D Mark II is definitely a step up from the 5D. Given that hardware-wise they have the exact same AF, the difference must be the Digic IV processor.
This weekend we took the kids to a birthday party at a jumping house. I had been to this identical location several months earlier with my old 5D and I was keen to see what the true difference would be.
