Canon already stated that the 5D will be superior to the 1DS series in image quality and noise vs high ISO. Yeah, I'm a little bent that I spent 5, 000US more on 2.1 fps some better weather sealing, and autofocus, only to give up better image quality. I feel like I got ripped off actually. And as one poster said, Canon will no longer be getting 8K for any camera as long as Sony and others offer what they have been, especially after this stunt!
As a photographer not doing sports, image quality and high ISO usability are the holy grail for me, along with MPs for cropping and large printing.
I could care less about a video camera. Gimikie to me.
I would definitely buy the 5D over the 1DS3 at this point, if I were on the market.
I think the 5D2 at 21MPs and BETTER image quality than the 1DS3 surprised a lot of people, and pissed off a lot of people who recently forked out 8K for the 1DS3.
And yes I do understand that this is technology and price coming down for ever increasing IQ and image quality, but I never, ever expected it to happen at this steep of a curve. It even beats out PCs move between price and performance, which was largely predictable--every two years or so your PC will become obsolete, at least for high end CAD and graphics work and gaming. That was expected. And when you upgraded, you would pay about the SAME for a much better computer. In short, you expected it because it was predictable.
On the upside, perhaps the future flagship Canon cameras will be in the 4500 range.
Last, I'll bet the price of the 1DS3 just fell about 3, 000 US. What I mean is that most likely very few people will now choose to buy a 1DS3 at 8, 000 US. I suspect that it would need to drop to around 4500 to be of much interest, and maybe even much more. (This assumes that you don't need the very few features where the 1DS3 outperforms the new 5D.)