foliage

This video was shot with the Z6:
 
 

I think offering full frame (no crop) 12 bit raw video on a US$2000 hybrid body pretty much meets the definition of going into complete and total overdrive.

Shot this mood piece to show a bit of Nikon's low-light capabilities in video. No use of noise reduction at all, so doing so should get you some super clean video with not a lot of trouble---IF your lenses are fast enough in certain circumstances.
Also, you can get an idea of how well 420/8bit video grades--I did some fairly extreme things to get the looks I wanted.
 

If we assume the most probably outcome, it's that the Z7 4K looks like the D850 and the Z6 4K looks like the A7 III.
The Z7 4K in full frame mode is excellent, same as my D850. A tiny bit of aliasing on very high contrast diagonal edges, but that is to be expected going 46MP down to 4K. There are no real issues, honestly, same as D850 which I loved. It's detailed, it's cinematic, it's got a ton of dynamic range and a nice codec, with great colour science. Rolling shutter is well controlled. Switch to APS-C mode and it is supersampled from 5K, just like the D850 and the A7R III. In full frame it is slightly superior to the A7R III, slightly smoother looking and less aliasing.
Now the Z6 we are told by Nikon is full pixel readout in full frame (like A7 III) but the APS-C mode has to be upscaled from something like 3K, again same as A7 III. So the Z7 is going to have the better APS-C 4K, and the Z6 will have a MARGINALLY better full frame 4K image assuming it does indeed ape the A7 III's full pixel readout (6K to 4K).
Until the Z6 actually arrives, we won't know for sure, and there may be issues we're not yet aware of or Nikon might decide to take features out, or reduce their potency. On paper, the specs look fine, but the devil might be in the detail.
If it works out as expected, the Z6 is going to be a big fat bargain, and preferable to the A7 III taken as a body in isolation... Once you start talking lenses, adapters, etc. Then it gets more complicated.

His findings goes against nearly all other ones I saw. The general consensus is that the AF works as good or as bad as the lens you are using. I mean if you are using a fast lens it will be about as fast as it is on Fmount.
 
 
I mean it might be a fraction slower, but I can live with that kind of tracking everyday. In fact there are shot I would never have been able to do like in this video manually like subject moving toward me and same time zooming at 70-200 FF at 2.8.