You should search in Nikonians. There's so many threads about it. Although it still made me confuse of so much knowing of the issue. Victor Newman, BJ, Signata, and MANY more is always come with good technical answer.
Me, in the land of confusion, still looking is there any new trick of sharpening. D100 sharpening issue is really something, isn't it
PS. Of course, there are many point of view of how sharp is a sharp picture.
Pinky Mirror Nikonians@Jakarta,Indonesia-- it's near Bali, if you don't know where it is