Ist post only because I lost my old ID. Nikon user (and famous at that) - I wrote the Sony A7r vs Nikon 810 blog that had over 8,000 readers. In that blog I documented over and over how the D810 was superior to the A7r for total IQ.
Now equipped with a D850, a good selection of Nikon, Sigma and Zeiss lenses including a full Otus set, I find myself less than enthused with a Nikon mirrorless and refuse to buy a Sony because of unethical business practices.
IMHO - Nikon doesn't need a mirrorless camera - what they need is the Highest Quality EVF in photography. I am tired of using a clunky 3x loupe to get critical focus out of my Otus lenses and the D810/D850. I'd easily pay $1000 for a well designed EVF than I would pay any money for a whole new infrastructure of camera gear.
I still have all of these Leica lenses, Contax Zeiss, some M43, the f-mounts.... enough. I about ready to trade in all in for that little Lumix with the tilting EVF.
Nikon should think more like Porsche instead of follow the leader. Make enhancements every year to the 911 and eventually arrive at the line up they have today.
I get your arguments for good EVF, but EVF just renders the mirror superfluous.
Porsche has unparalleled, almost superhuman engineering skill and attention to detail which is the only reason they have managed to make the stupid, unstable, obsolete design with engine mass behind the rear wheels (like the death trap original VW Bug) actually work and not kill the driver (thanks to modern electronic stability management). Their mid-engine (“mirrorless”) Boxster and Cayman would easily outperform the 911 variants if their marketing people would only allow it.
Porsche 924, 944, 928 all had to split their market with other great sports cars as does the Boxster and Cayman. But with excellent execution, Porsche has zero competition in the 911 niche. Protecting the 911 aura is the sole motive for limiting the mid-engine —“mirrorless”— Porsche efforts.
Let’s hope Nikon’s marketing people allow their mirrorless be all it can be rather than “protect” their DSLR’s primacy. The DSLR is nowhere obsolete YET. But things are slowly shifting.
Love the EVF (despite what others think) love seeing my histogram in the EVF and it's well balanced with the current lens. Ergonomics? No problem with that. It's something one gets used to.
There was loss of light with the transparent mirror that resulted in performance losses with the Sony Alpha system that wasn't great. Not exactly ideal.
I don't know if I'll buy a Z7 but I hope enough do to ensure that Nikon continues to develop it past Sony's top offering. Lloyd still claims the Sony files are fragile and that's what I found with them too all the way back to A7r and 11+7 bit.
What I need to see from Nikon to buy the Z7:
1. Same excellent files as D810/D850
2. Ability to use legacy AF and manual lenses with an affordable adapter.
3. Best in class EVF implementation - higher res/refresh/no jello effect/etc
4. Rock solid chassis - it better be - lenses like the Otus 28mm will put a huge lever on the mount and if this alignment is compromised then it's all a waste.