The Good Speed, a gazillion useful features, and excellent high-ISO-sensitivity photos are among the Nikon D4's standout qualities.
The Bad The camera's vertical and horizontal shooting experience could be a little more consistent.
The Bottom Line For Nikon devotees looking for the fastest body available, the D4 delivers.
Nikon D4 (Body Only)
The Nikon D4, the company's update to its D3S pro body, kicks it up a notch in all respects -- higher-resolution sensor, faster continuous-shooting performance, better and more flexible video quality, and a host of attractive new features.
Without question the D4's photo quality is excellent, with a great noise profile. Its JPEGs look clean as high as ISO 1600, and are decent at ISO 3200 -- there you start to see some detail degradation -- and usable at ISO 6400, depending upon content. I compared the in-camera NR off to the normal at ISO 1600, and didn't really see much of a difference in the JPEGs. There's a noticeable bump in artifacts between ISO 3200 and ISO 6400.
But rather disappointingly, the artifact profile for JPEGs doesn't look quite as good as the D3S' at sensitivities below ISO 12800. Although better by the numbers than the D3S's JPEGs at ISO 12800 and above, I wouldn't suggest using the JPEGs beyond ISO 6400. On the upside, shooting raw yields significantly better shots at higher sensitivities.