You know I have never had a problem with the 5Dll focus. I know some people say it has problems, but I know my and the camera's limitations, and adjust accordingly. I have taken good action shots with it, but would I use it for sports all the time...no. I love the focus on my 1D4, and they don't compare...but I still love my 5Dll. And I almost never...and I mean never, on both systems, use the center focus point. I find that I can't get the right composition. And I almost always have great success with using the outer focus points on the 5Dll. that being said, yes the above photo had focus assist because of the 580EXll attached to the camera, and that always helps!! The only time I have ever had problems with any points on the 5Dll, was with a rented 50 1.2...just couldn't pull the trigger on that lens with focus always being wacky. Granted, when you hit, it was sweet!!!


But I digress...the look of the 70-2002.8ISll on the 5Dll is nothing short of spectacular!! And the bokeh on it kind of reminds me of my Sigma 50 1.4...kinda creamy/dreamy look. The colors and contrast look fantastic, too. This lens stays on one of my camera's ALL the time. I think it was a definitely a good upgrade, as I will have this lens for a really, really long time. It is just too useful. And I haven't had a chance to try it with my 1.4TC yet either(I do have a 300f4, too), but everything I've read from various sources, say it is a great combination, as well. Not much to dislike(the price is very steep though!!) about this lens. And the competition is sweating bullets, 'cause the new Nikon 70-200 VRll just came out, and looking at the reviews on DPreview, it is good, but not great, and I think ours blows the Nikon away. Although, on the flip side, their 14-24 smokes our 16-35ll by a mile!!


Anyways, it's a great lens, and worthy, IMHO, if you can afford it.