10 out of 10 points and recommendedvery sharp, nice details, good bokeh, f2.8, FTM, IFnone at all
I use this lens basically for macro work. The results are pretty nice. The pictures are sharp and high quality. The IF design was a very good idea from the Canon, because you don't have to pay attention for the minimum working distance, because it stays constant. The USM works well: It's quick and accurate. The minimum working distance is 9 cm. Do not wait wonders from it. Some bugs/butterflies will run/fly away, but by my experiences I can say: If you cannot catch an animal with lens(because it runs away), you won't catch it with a 100 mm lens too. If the working distance matters you, buy a 150/180mm macro. This lens is a good alternative for portrait works too. I made some portraits with it and they're also nice.reviewed July 7th, 2009 (purchased for $410)
Very good choice for an APS-C DSLR.