one look at the Nikon D4S, you know this beast is not for the faint-hearted, i.e. it is geared towards the pros like the D4 before it. pixel count of the image sensor remains the same 16.2-megapixel, but even so, it wasn’t pluck out from the D4; it is a newly developed piece of FX-format CMOS image sensor, which is paired to the new EXPEED 4 image processor. however, what Nikon is offering is beyond the image sensor; it is touting a number of revisions in its features and functionality, including AF performance, image quality, workflow and operation, and movie recording. for starter, it now has an ISO range of between 100 and 25,600, and also supporting extended sensitivities as low as ISO 50, all the way up to a mind-boggling 409,600.
next, the autofocus also boast greater accuracy and faster initiation, and also better tracking performance. in addition to the four AF modes, the D4S now offers a fifth AF-area mode known as Group-area AF that uses five focus points (one assigned by the you) to enable a faster workflow with continuous shooting at about 11 fps with AF and AE tracking. surprisingly (or not?), 4K videoing is not on the palate. the best it could serve up is uncompressed 1080p at 50p or 60p. other refinements include an improved viewfinder visibility with, notably, shorter blackout time, a redesigned grip, refine layout of buttons and controls, and also better communication speed with the 1000BASE-T support for wired LAN communication for fast image transfer.
those are really the key differences from the D4, which without 4K videoing that even smartphones has, seems pretty hard to justify its asking price tag of $6,500 (note: body-only). if you are undaunted, you are welcome to hit up Amazon and pre-order yours. expected availability would be on March 06, 2014.