Nikon has finally unveiled the D4, the long-awaited successor to the camera maker’s full-frame D3S DSLR. It features a 16.2 megapixel sensor and an extended ISO to 204,800 at Hi-4 as well as a brand new full-frame FX-format sensor to take things next level. The D4 can also capture 10 fps stills at full resolution with full auto focus and exposure. A new 51-point AF system offers full cross-type focusing that’s compatible with all Nikon lenses, even when paired with a teleconverter. Nikon’s latest beast also features two card slots with support for both UDMA-7 CF and the recently-announced XQD format, which brings write speeds of up to 125 MB/s — enough to capture 105 consecutive RAW images at 10 fps. A release is slated for late February.