D3x diffraction study
The D3x is subject to diffraction like every other camera. See the complete study in my review of the D3x in DAP. See also my articles on diffraction, as well as my article in the Jan/Feb 2009 Photo Techniques magazine.
The graying, resolution-blurring effects of diffraction
Nikon D3x + Zeiss ZF 100/2 Makro-Planar