I bought a canon 7D and used it for an entire weekend. I noticed it dropped frames much more than my Canon 5D. There were many more aliasing problems with fine detail in the background. The camera is just plain awful in low light situations. Anything above 400 ISO I was getting too much noise to deal with. The only thing it was great at was taking lots of stills at a high rate of speed. This feature is great for certain types of sports photography. Overall I was very unhappy with the results and ended up returning it.