The Nikon D4S is the successor to Nikon's flagship DSLR, the Nikon D4. The main improvements on the D4 include the Expeed 4 processor, wider ISO range up to 409,600, group area AF feature and 11 fps ...

Time to capture, after half-pressing and holding shutter button in Live View mode. In terms of the Nikon D4S's ability to determine that it's properly focused when shooting the same target ...