When the ZD back and 645ZD camera came out I was asked to give it a tryout. I might have been the first person to ever have a cover and a number of magazine features with it. As I said in an earlier post, if someone has an existing 645AFDII or better system and could get a ZD or ZDb back at a great price, it could really be worth it. I do think overall that the Canon 5DMkIII is a better choice. But it is a personal choice. This was the cover I shot, I don't have a bigger file handy at the moment.