10 out of 10 points and recommendedSimply one of the best performers in telephoto you can get. Bullet proof AF, Sharpness, IS, Build qualitynone really
Ok I bought this lens 3 months ago and I I used it for lot's of stuff now. ( Sports, animals, landscape)reviewed October 20th, 2005 (purchased for $5,000)
I love this lens. Yes it's Pricy and heavy, but that's kind of normal for this big telephoto.
I can also say that it performces very well with the Canon 1.4 Converter.
It's a fantastic lens and I can only recomend it.