There has been quite a bit of talk about the D800 needing the absolute best lenses to get any decent results so I conducted a highly
scientificunscientific test involving an old lens.
Wide open at the long end of the zoom 1/250 iso200 70mm F/2.8
Then at 35mm hand held with the close up facility locked in 1/320 iso200 F/5.6
The above is a screen view crop at 100% of this one. The crossword grid measures 42mm in real life, on this screen it is already at 90mm, so twice life size.