Originally posted by deadwolfbones Complete BS, IMO.
The D800's sensor, for instance, outdoes the much lower-res sensor in the 5DmkIII in virtually every category at DXOMark.
Canon's sensor tech hasn't progressed much over the last five years, while Nikon has hitched their star to Sony's sensor magicians, who are doing excellent work (as seen in the K-5, for instance) regardless of the pixel density.
But in comparing the 24 megapixel sensor to the 16 megapixel sensor, it seems like the 24 megapixel sensor does better in resolution (debatable with kit lens), but doesn't do quite as well with dynamic range and high iso performance (this is based on DXO Mark data -- Nex 7 versus K5 performance. To me, the difference in resolution is mostly theoretical, as with pixels that dense, everything has to really fall into place to take advantage of it, while the difference in dynamic range/high iso is more usable.
Anyway, I sort of think 24 megapixels is overkill for entry level users, but then again, I think that 14 megapixels in a point and shoot is too much too.