It never ceases to amuse me how people just look at the resolution count of the camera and assume the output will equal or better that of any other camera that is within 2Mp+/- of it's MP count and completely ignore the size of the sensor. I agree that the D800E will have output that is similar to that of the 645D in terms of resolution, however the overall IQ from the 645D will be higher because the sensor is bigger, the pixels are bigger, and there is much less strain put on the lenses with the sensor used in the current 645D than with the D800E. Nikkor lenses are very good, I own a decent sized collection of them that I work with, but in the area of wide-angles there are going to be some problems with image quality in the corners that are going to be exacerbated but the high resolution of the sensor. Canon photographers have pretty much given up the hope of ever finding a prime, or zoom wider than 20mm* that doesn't have horribly smeared corners.
*truth be told the Nikkor 14-24mm f/2.8G ED lens is absolutely stellar, but in the end it is a rather specialised and expensive lens....and prone to flare.
Last edited by Digitalis; 02-08-2012 at 04:05 AM.