I am very impressed with the lens thus far. The color is fantastic and as good as images from Canon EF 70-200mm f/4L The lens focuses down to 1.5 ft and that can be useful when you need a macro lens. When used with a polarizing filter, the colors definitely pop. This lens is fast, focusing spot on. Images are sharp, IS (Image Stabilization) is handy. There is no questions this lens is going to stay on my street cam - Canon 10D that is, from now on
Canon sells the lens bundled with Canon EOS 7D 18 MP DSLRand that makes a lot of sense. It is a great combo for serious amateurs and professionals alike. Considering that this lenswas first available 10 years ago in Sept 2002 and today it ranks #66 on the Amazon Camera & Photo list, that alone speaks for how well received this lens is. Canon has a time tested winner in their arsenal and they know it.
If you are planning to do a lot of macro photography and want a true (1:1) macro lens that does not break the bank, take a look at the Canon EF 100mm f/2.8 Macro USM Lens. I shot 90% of my stock photos with the lens.