Is one better than the other? If so, what are the main differences, especially in picture quality? I use a Contax 645 and Zeiss lenses for landscape photography and am trying to make up my mind about changing over to a Rollei 6008AF with Schneider lenses. Is this camera good for field work? The intention is to gain the added image area in the larger 6x6 format as well as the use of Schneider glass, especially the PCS 55mm PQ lens. So, is that a good decision or should I just stick to my current configuration? Any thoughts?