Will be available March 6th for $6,499.95.
D4S is a multimedia powerhouse, allowing you to capture stunning and smooth 1080/60p video. Shoot scenes with tremendous depth and sharpness as well as with shallow depth of field or bokeh—and even capture 2MP stills simultaneously while recording video. For video, 2.7x Crop Mode extends the reach of lenses and produces outstanding video quality and detail. D4S adds real-time audio adjustments during recording, selectable sound ranges like Wide Range and Voice Range and improved wind noise reduction on the internal mic. Adjust color settings on the camera's LCD to better match an external monitor. Capture smoother Time Lapse sequences with reduced flicker and improved interval control (up to 9,999 shots), and even simultaneously record to internal CF or the latest high speed XQD cards and an external recording device. Create stories that move us.
Links
Perhaps, it's a "powerhouse", and the still images are going to be superb for action and low-light photography. However, I'm wondering what Nikon thinks about keeping their video record limits:
Bit rates for 1080/60p: 42Mbps (10 min limit), 24Mbps (20 min limit)
That extended up to 409,600 ISO could, potentially, have photojournalistic applications such as, public performances or war photography when flash is not permitted or advisable. However, why Nikon didn't add the silent electronic shutter mode, either rolling or global?
I think this is a huge step forward in video. I know hacks are available for Nikon cameras, so if this monster is able to produce a good hacked bitrate, we are all good. DR in this cameras are very good, so its video will be less limited.
'Dedicated', the trailer, shot entirely on the D4s by Corey Rich
Manual is available at https://support.nikonusa.com/app/answers/detail/a_id/18884
Studio samples including raw - http://www.imaging-resource.com/PRODS/nikon-d4s/nikon-d4sA7.HTM
The Nikon D4s is an extremely well built and very responsive camera that seems to react instantly to anything you throw at it. Start-up feels instantaneous, there is no shutter lag to speak of and with the right lens mounted, focusing is also very fast. The D4s is about as rugged as it gets, and the ergonomics are first class. There are a multitude of ways to check and modify settings, and you can set up the camera to work just about any way you like.
Nikon D4 adds a number of enhanced features, including quicker continuous shooting with AF/AE, increased speed ethernet, as well as improved video recording. Where there is the most noticeable improvement is in the increase in image quality and specifically noise performance, which gives excellent results right up to ISO25600 and even ISO51200. The improvements have meant the camera's video mode will also shoot at ISO25600, and stills photos can be taken at a whopping ISO setting of ISO406900, giving the camera the highest ISO setting of any Digital SLR available.
http://www.ephotozine.com/article/nikon-d4s-dslr-review-24350
New firmware
https://nikoneurope-en.custhelp.com/app/answers/detail/a_id/60195
The Nikon D4S' default tone curve is remarkably similar to that of the Canon 5D Mark III.
Compared to the Nikon D4, the D4S offers a whole stop more shadow detail, while not sacrificing any highlight detail. The D4S' tone curve offers higher contrast in the brighter midtones than its predecessor, along with a more subtle roll-off from near-white to completely 'clipped' regions. Compared to the Sony A7, the D4S also offers a whole stop more shadow detail, but clips to white 2/3 EV earlier.
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