Yes, but the 1Ds MkII is so big and heavy, which in my opinion takes all the fun out of photography. I certainly don't want to be carrying something as big as that around with me when I am on holiday in Italy for example, whereas a 5D would be a much better size/weight etc. At the end of the day it depends what you want out of photography. I currently use a D200 and 18-200mm lens and it is almost perfect for what I need. It could do with better low light performance but then it has integrated flash. However if you are a Pro then it won't be good enough and a 5D MK II might be the answer. I thought the ISO performance was supposed to be very good in the 5D MK II. I would have though it better than my D200.