Exactly how good the D800's image quality turns out to be is something that we're very keen to establish. On balance, increased pixel count generally counts as a good thing in everyday photography. The most important 'headline' benefits, all other things being equal, are that you get more detail in your images and greater scope for cropping. But there are potential downsides, too. The D3X, Nikon's current flagship, makes very high demands on lenses at 'only' 24MP and we wouldn't be surprised if some of the optics which D700 owners love so much don't shine quite so brightly at 100% on screen when bolted on front of a 36.3MP sensor...