Summary: What can one really say about one of the best full frame 200mm f/2.8 lenses on the market!? It is excellent! This is an older lens and considerably less expensive than the current version which has all the bells and whistles but I don't really require IS (image stabilization), the nice Canon white color, etc. The optics are what counts and the glass in this lens is excellent! My only minor quibble is the lack of a tripod mount ring; a little cheap but a minor item.
Conclusion: I bought this one pretty recently but I have to say it's gotten a lot of use. I'm not a big fan of zooms, but I have a few. I was looking at the 70-200 f/2.8L IS II. Very pricey, and it would probably spend most of its time at 200mm. So for 1/3 of the price I get this 200mm f.2.8L II. I think it's actually sharper, and I don't miss the IS much because honestly below 1/200 of a second your subject motion comes into play. Also this lens is quite sharp wide open.
Pros: Fast auto-focus, Superior build quality, Super-sharp images, lightweight for the fl, great value
Conclusion: I was carrying a 70-200, but realised I was permanently jammed out at 200 for wildlife/sports, and the results were not quite what I had hoped for. I tried this because it is 2.8L, compatible with the extenders, nice price, and I was betting on gaining prime sharpness over my zoom. It delivers, and it keeps surprising me. It's lightweight. It's black, so it doesn't scream for attention.
Pros: Super-sharp images, price/value, lightweight, black