For months I kept telling myself how heavy the D3 is, and how expensive it is, and yet on the first available opportunity I bought one. A few comments after brief testing. Wide angle corner darkening test: Lenses that I tried by shooting a white wall with: 25/2.8 Zeiss, 28/2 Ai-S Nikkor, 35/2 Zeiss, 35/2.8 PC Nikkor. There is some darkening in corners using all of these lenses at wide apertures. It is most severe on the 25/2.8, where it disappears by stopping down to f/5.6. On the 28/2 and 35/2, f/4 is sufficient. So it's two stops down on all these lenses. I will need to experiment with correcting the 25/2.8 in Capture NX. On the PC Nikkor, wide open f/2.8 was sufficient when centered or at max shift along the short axis of the 24x36 frame. Max shift along the long axes required stopping down to f/4 for even illumination (by just visually looking at the images). Otherwise seemed perfect. The only disappointment was the 25/2.8. But it has other redeeming qualities (very close focusing, low CA, high sharpness). I also tested a few other things. I shot with the 35/2 on the D200 and 50/1.4 on the D3, the same subject at f/2 at iso 200 and iso 3200 with both cameras. I wanted to see how much difference there was at iso 200. Well? I don't think I will be shooting with my D200 any more, low or high ISO! Accurate manual focusing on the D3 is much easier (with my eyes) even though I have the Katz Eye screen on the D200. I could not see any vignetting greater than I've gotten used to with 35mm film shots using the same lenses and apertures. Sharpness was excellent basically with all of these lenses at all apertures. I did some testing of the screw drive AF. It is quiet and focuses accurately on my 105mm DC without adjustment even at f/2. AF on a still subject with no movement was very secure and sharpness good. My D200 by contrast does not autofocus the 105mm DC adequately accurately with it - I had to stop down to f/3.5 to get good results (by which they were excellent). A motion test involved walking towards a wall with the 105mm lens set at f/2.8 and with the camera on continous AF and 9fps. Focus accuracy on this test was a bit variable. Some shots were really sharp and others were slightly out of focus. AF-S focusing (with the 70-200) was secure and fast with essentially no out of focus shots in the same test. However there was obvious vignetting and even the center of the image was darker than with the 105 prime, like it was not a true f/2.8 lens. I then tried changing the priority to focus+release with the 105 mm DC and that seemed to fix things - slightly variable timing between the shots but excellent consistent focusing accuracy! So with AF-S lenses release priority looks sufficient but with AF lenses with moving subjects (or in this case, a walking photographer shoting a still wall) focus+release priority gives really good results. I am speachless. The 50/1.4 Zeiss displayed phenomenal sharpness at all apertures. No difficulties with manual focusing on still subjects. A most impressive lens. I think the bokeh is fine as far as I can tell. Colors at the vivid setting were really vivid, the and contrast was higher than on the D200. The vivid colors were visible at all ISO settings with some decay in the quality of colors at 6400. I had to dial saturation 2/3 to the max in Capture NX to get similar saturation on the D200 (which was on enhanced). I was surprised by this. I did some real life shooting of casual portraits with the 70-200 and the D3. They turned out really well - and the lighting was atrocius. No great works of art but nothing like this I could have done before. Good light is still needed to get great shots but in poor conditions this camera really does have something extra to give. I have to say that this has been a most impressive experience, my first evening with the D3. It looks like my AF primes are back in the game, and with a vengeance!