The following video presents Nikon D4S Product video:
The ultimate imaging machine has advanced. Built to keep you ahead of your game, everything about the D4S powers exceptional images at exceptional speed. An expanded ISO range and EXPEED 4 image processing take low light photography to another level, making the camera a master of the dark as well as the light. Advances to AF performance offer improved acquisition and tracking at 11 fps, plus finer control over the AF area with the new Group Area AF mode. Nikon’s RAW Size S file format allows accelerated image transfer onto networks, and a Gigabit 100/1000TX Ethernet port enables ultra-fast connection. The D4S offers improved acquisition and tracking performance. Fires at a blazing 11 fps in FX format with AE/AF superior to its predecessor (the D4). The 16.2-MP FX-format sensor offers the ultimate image quality.

Firmware Update
2015-04-21
New Nikon D4S “C” Firmware Version 1.20
The new changes are as follows.
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File name: F-D4S-V120M.dmg
System requirements:
- Operating system:
OS X version 10.10.2
OS X version 10.9.5
OS X version 10.8.5
OS X version 10.7.5
Mac OS X version 10.6.8
Note: Card reader or computer with built-in memory-card slot required.
Please click here for more info as well as the updating camera firmware.