I'm confused. The D800 is being touted as a great camera for landscapes, but it's being reported, because of severe diffraction, you should not shoot at an aperture greater than f8.0. How is someone suppose to get great depth of field in landscapes if you can't go above f8.0? Does shooting at f16 or f22 reduce the sharpness and detail so much that the increase in depth of field is useless, because the overall image will be soft? By the way, I am referring to the use of a wide angle lens.