The Nikon D4 is the Japanese company's February 2012 refresh to the very top end of its camera range, targeting sports photographers in particular with its high shooting speed and strong low light performance. It offers a full-frame 16.2-megapixel sensor, an improved 51-point AF system that's dramatically faster than the D3s, and an even wider ISO range. The camera is available and started shipping in the US on March 20th for $5999.95. Meanwhile, the UK and Europe saw the D4 launch on February 16th at prices of £4,799.99 and €5,658 respectively.