The 4 good things in D4 is that first Nikon has been wasting their time by upping the resolution of the meter sensor for marketing purposes to 91,000 RGB pixels, second ergonomics, third less weight that D3S and finnaly the buttons are now backlit. But the most important thing in photografy is the quality and in that area Nikon is the best!!
I like these subject, but I wish that Dpreview could make DX format studio tests with these lenses to be able to compare, like, for example, with Sigma 10-20mm F3.5 EX DC HSM and Nikon 10-24mm f/3.5-4.5G ED.Because in my opinion the quality of third-party lenses have to be better than they are know. The price is important but as the quality of the pixels is improved more demanding will be the quality of the lens. But of course if you want to buy good lenses you have to spent at least $1000 and in my case, I just don't want to that... So which of these (on top) two lenses is the best?