Summary: I hate to poke a hole in the great reputation of the lens, but compared to my ta**on SP f/2.8 zoom lens, this actually has less sharpness and less quality, perhaps I have a lemon? I do not want to give this less than four eggs without really digging into more situations and more filters, but will be...
Pros: Build quality is great, I would return it, but its too soon to tell, it may be a great lens in some situations, but I am apparently spoiled to other better lenses, good all around lens, a little overdone as far as the build goes, but I like heavy objects (yes that's actually a pro to me). If you'...
Cons: PRICE, thought I was upgrading from an old lens I had, BUT quality not what I expected. My old f/2.8 zoom lens (that is not even in production anymore) had about the same focusing time and somewhat more vivid shots and somewhat sharper, and MUCH CHEAPER... (it had an 82mm filter size)
Summary: I bought this lens for shooting softball action in early evening, twilight, and night games. The autofocus is unbelievably quick and impressive. It's important to remember to set it to IS mode 2 during action. I forgot a few times and the images were not clear enough.
Summary: I bought the basic, f/4 non-IS version of this lens about a year ago and liked it a lot. However there was always a niggling feeling that I should have gone the whole hog and bought this one as it would be more versatile for wedding photography. So, I recently caved in and made the purchase.
Summary: Pro: Great image quality, especially for available light portraits shot at f2.8 where you want a pleasingly blurred background. The IS is good but see note below. Con: Weight if you plan on carrying it around all day on a pro camera body.
Excellent lense but having some unsurfaced IS unit problem
Scott S., Amazon
8 November 2005
Summary: Well, well, well.. This lense is known to be one of the best Canon lense. It gives excellent pictures, fast focusing, and is very helpful through excellent Image Stabilizing mechanism. HOWEVER, with $1700 price tag, any defect/quality control issue should be disclosed to this lense users.
Summary: As a semi-pro freelance I was very worried about the cost of this lens. However once purchsed I would never part with it. I use it for all kinds of shots from portraits to fast sport. The lightning fast focus lock is second to none. I use it with a 40D and it gives great results.
Excerpt: The EF 70-200mm f/2.8L IS USM lens is fantastic. It offers a very useful focal length, excellent construction, a constant f/2.8 aperture and Canon's 3-stop Image Stabilisation feature. From the moment you remove it from it's box, you know this is a very serious piece of kit.
Summary: What more do you want from a lens. This is the daddy at the range. Working a lot outside at night this gives me the security of mind knowing that I can still get away without using flash where its not needed.