John McMillin: Given the large size of this honker, I'd rather carry my smallish FF camera (Sony a850) and a conventional lens. Might as well be a prime, with this scant zoom range. Still, it's an achievement that it's as sharp as it is.
How much does a smallish FF camera (Sony a850) and a conventional lens cost and weigh compared to this lens and a crop camera.
Montana500: Nice to see Canon admitting that too many pixels hurts IQ. The 40D had better IQ from ISO 100-800 than the 50D and 7D. The images were "smoother" and cleaner, which is why I bought a DSLR to begin with. The 7D is like those Panasonic consumer cameras (The FZ line) or my old venerable Canon s2 superzoom. If Canon came out with an 8D with 12mp I'd trade my 7D for it. It's all about IQ.
A 7D 18MP downsized to 10MP as 40D will have more resolution and less noise . You can't compare 100% crops of a sensor that 80% more resolution.