>It's a bit puzzling that in your case some underexposure leads >to unacceptable noise performance in a camera which sets a new >standard in this regard, at least for APS-C format.
The D7K is good but it is not perfect in the noise department IMHO. Depending on one's expectations or in my case pipe-dreams , I did hope for a touch better noise performance. The thing is I could still very much benefit from even better noise performance on my DX cameras. For example if the D7000 matched the D700 that would have been astounding.
I find I get a little uncomfortable reading some physics/engineering descriptions of this new sensor that get a little hyperbolic. Especially when they describe how good it would be if sewing three of these sensors together to create a marvellous FX sensor from this same underlying technology.
I like the camera, don't get me wrong. Am having a lot of fun with it, but I still fervently hope they continue to do better in future DX generations.