We already have full reviews of the Nikon D800 and Nikon D700 with our standard review photos that you can pull off and compare. But here are a few more photos, taken with a Nikkor AF 50mm f/1.4, lens set at f/16 to help give more reference to diffraction and resolution.
The cameras were placed on a tripod and the same scene was shot with each. Click on any of the thumbnails below to view the large versions. You can open two browser windows side by side and compare both versions.