Hey all,
My rental D800E came in this afternoon and I spent an hour or so playing with it. I'm coming from a D7000 (28K+ shutter actuations) and I've never owned an FX DSLR, but I have limited experience with a D700 and a D3s.
1) I LOVE the bigger viewfinder going from DX to FX. It makes manually focusing my Zeiss primes a dream... this was previously not possible with the D7000.
2) It's definitely bigger than my D7000 but doesn't feel substantially heavier. It is heavier, but thankfully it's not a huge heavy brick.
3) I agree with previous comments about the weird handling with the camera, in particular from Lloyd Chambers and Kai from DigitalRev TV. I can't explain why, but it feels somehow less secure than my D7000. I keep wanting to dig my pinky in deeper for more of a grasp, and I want a more molded palm area. I also hate how the mode button is so far away from my right index finger... it's definitely a stretch. Changing ISO and WB from the top of the left knob is also a little awkward, but it's probably something I'll adjust to. FYI, I'm a 5'11" all American kind of guy with average size hands for a guy of my height.
4) A huge disappointment is the interpolated quality of the Live View for critical focusing. The D7000 is actually superior because at the highest Live View magnification, there is no apparent interpolation. I felt like I couldn't get a really confident focus with my Zeiss 100/2. This is a lens that can deliver on the D800E and even a tiny focus error can affect the resolution quite a bit. Bummer. [EDIT: Michael and Bernard point out below that this view is roughly a 300% view that actually makes critical focus easier, in spite of how horrible it may look. Mea culpa.]
5) I like the new LCD screen. It is sharp and colorful. When you take a sharp picture with a good lens, it's an amazing experience to zoom in and see more and more and more detail. Very cool. That said, the LCD definitely has a greenish color cast, which can make some colors ugly (especially warmer color), but can also enhance the greens of foliage. I'd prefer a more neutral screen... in the big picture this isn't a big deal because I don't check color accuracy on my LCD, I check it at my computer.
6) Okay Nikon, did you really have to switch the + and - zoom buttons?
7) AF accuracy was good on my 80-200/2.8 AF-S and my 14-24/2.8G. My 50/1.4G wasn't as consistently accurate. I haven't done AF Fine Tune yet and I haven't done extensive testing... I'm just reporting how things came out of the box. I'm not terribly sophisticated when it comes to AF, so please be nice with your comments.
I saw some really subtle, minor moire on a repeating brick pattern at f5.6 on my 14-24/2.8... but I had to go looking for it. I ran an aperture series on that lens, and by f11 it was gone. f11: a built in AA filter!
9) The color quality and sharpness is amazing. I've never seen detail like this out of a camera. I'm excited to take it to Yosemite this weekend!
Dan