I own the M9 and assorted Leica M lenses. Earlier I used to own Sony A850 with some nice Zeiss lenses. I just had to check out what is all the hype around D800E. Rented the camera and the new Nikon 70-200 F4 this past weekend.
AF misses by a mile even when using single point center AF. Not sure if this was my particular sample of camera or lens or both but in any case, AF just did not seem to be precise even in good light. Live view is useless in bright light as the LCD just washes out in sunlight. Anything below eye level and you have to have really strong legs to do acrobatics as the LCD does not articulate.
But....and it is a big BUT, when I switched to using MF with magnified LV + 3sec delay with mirror lock-up, the results were just astounding. And it is not just the resolution. The color, clarity, the ability of the files to be pushed hard is amazing. Wow, just wow.
The camera body is surprising lightweight for its capabilities, but obviously with a zoom it becomes quite substantial to carry around. I hiked for around 4 hours with the D800E + 70-200 F4 + M9/3 lenses + one tripod without issues, so it is definitely a viable proposition especially for car trips.
For me, a perfect complement to the M9.
To buy or not to buy.....that is the question....life is hard.
Web images really do not do justice to the results I see in full glory on my monitor.
PA RT6 by brownxy, on Flickr