While I was about to get the D800, arrival of D600 confused me. I use D300S, D700, and Nex7 with Sony and Nikkor lenses (via an adapter). Since NEX is not a sport camera, and D600 is perhaps not a sport camera either, I think I will skip the D600. After using NEX-5N, then NEX7, I came to maybe sounding radical conclusion that more pixels is better, if you need them, and take advantage of them for certain type of pictures. The D600 and NEX7 have perhaps the same or similar 24 MP sensor. Nikkor lenses work well on NEX7 with a mount adapter, and electronic support for manual focus lenses built into the NEX7. NEX7 + a Nikkor lens + mount adapter < less weight than Nikon D600 DSLR + a Nikkor lens. ?