I'm a bit confused about this area and wonder if some one can clear it up for me.
A web page that should be reliable states that Nikon raw files contain a tone curve. The base curve section here.
Maybe they do or maybe the comment is out of date.
I have seen comments about exposure problems. The jpg tone curves in the Dpreview look over exposed to me but that might be a miss understanding on my part. The curve is shown on this page and mid grey corresponds to about 112 bits rather than 128.
The following page is linked to mentioning a number of Nikon cameras including the D7000 as well as the ones it mentions - here the suggestion is that the cameras under expose.
The page may interest other people if they want to calibrate their camera in another way other than colour.
The way uk weather is at the moment there are few opportunities to make much use my D7000 and I would appreciate some idea on what to expect exposure wise for when I can use it in anger and take a lot of photo's. The 300mm shot I posted recently looks slightly over exposed to me which fits in with the dpreview.
The curve in raw file is even more confusing. The rawtherapee manual explains how to get hold of Nikon's curves from ViewNX2 or the full package. Reading about D light I get the impression that to make use of this from raw that NX2 is needed? If the curve is in the raw file why get it from NX2.