This is from the viewpoint of someone who photographs mainly portraits. Landscape shooters, for example, might have a very different take on it. Maybe my eyes are going wonky with old age, but I've taken a quick look at the D800/D800E portrait samples and to be honest can't see any useful improvement in detail over and above my 8mp 1DMkII. Even if there is detail that I'm missing, all the emphasis in portrait retouching seems to be on blurring or 'smoothing' the skin so why would we need more detail there? Anyway, in the real (non pixel-peeping) world, do portrait or wedding clients usually examine their pictures through a loupe? There might be other advantages to the D800 (e.g. the face recognition feature that allows automatic exposure of the face in backlit situations with no need for the photographer to think about exposure compensation seems quite convenient for fast moving situations when you don't really have time to think, whenever those might be) but for pure resolution seems like overkill. Also, as someone else has pointed out, how does it perform in low light situations e.g. weddings? Possibly not a wedding photographer's dream camera? The 1Dx is looking more attractive by the minute. Canon had better hurry up if it's going to announce a 5DMkIII/5Dx though, before a lot of rich amateur/semi-pro camera users jump ship? Just a thought.