Thanks for the positive pointer about the D600 AF.
Have you tested it with fast moving subjects?
I too have a D300 - which has excellent AF.
Dont really want 36MP of D800, but dont want a D600 with sub par AF either.
Any feedback you can give about its AF performance with respect to the D300 would most helpul.
Thanks
Peter
It had no problem tracking some cats running toward me quite fast, but like any camera, you need to be using a fast focusing lens (I used 300/4).
The AF points are smaller, and I can get them on eyes of animals/people better, which I like.
The AF point spread is not NEARLY as bad in practice as some people make it out to be by examining pictures of the viewfinder. I haven't had to focus/recompose once yet, and if I ever have to, it won't be the end of the world. The outermost focus points work great, and they extent quite far into the frame.
It just seems more responsive and quick to lock on than the D300. It will also focus on things so dark I cannot even see them in my viewfinder until my eyes adjust, then as long as I point it at any contrast whatsoever, it snaps to focus.
Took it to the zoo and went to the nocturnal exhibits where everything is extremely dark and under weird lighting (heat lamps, etc.) not only did it nail the WB every time under colored lighting, but the AF gave me 100% keepers even at f2.8.
I am absolutely thrilled with this camera , and the IQ will blow your mind coming from a D300. I find it to be 2.5-3 stops better with much better colors t higher ISOs. You can shoot at 1600 all day long and it looks like ISO 320 on the D300. ISO 3200 and 4000 are great as well.