But for landscape work where corner sharpness is important, it may be that you really have to go to medium format to get 40+ megapixels resolved with good quality.
It shall be interesting to see how the D800 will perform in landscape photography with the Nikon lens lineup.
*nods* I am wondering how far from a cap on MP we are with FF cameras. While new lenses can always be produced I would wager they would get progressively more expensive to produce, and of course people like being able to use old glass.
I would not be surprised if Canon/Nikon/Sony/etc start looking into other ways to get high MP like titled sensor + MF lenses or something. If they could find a way to bring the price down there is quite a bit of pent up demand for MF cameras that is not willing to pay the much higher cost of current digital backs.
Couldnt border performance be potentially improved by increasing the size of the image circle? perhaps thats actually what the new 24-70 does hence the larger front element ahd high price?