Looking at the crops above, the 12.2-megapixel Nikon D3S is still slightly better than the 16.4-megapixel D4 in terms of high ISO noise at the pixel level, however keep in mind that D4's pixel ...
Time to capture, after half-pressing and holding shutter button in Live View mode. In terms of the Nikon D4's ability to determine that it's properly focused when shooting the same target multiple ...