No site do Ken Rockwell tem esta pérola sobre a D800E:
The D800E is intended for people who spend most of their time looking at small segments of their images greatly enlarged on a computer screen, while the regular D800 is for people who actually take pictures. The D800 is for making pictures, while the D800E is for counting pixels.
O texto é ótimo para se entender as diferenças entre os dois modelos.