Rating: Summary: Nancy Zehnder Sumner WA Review: This is a pretty spendy lens but worth every penny if you take low light action photos. The photo quality is incredible. It is fairly heavy and you'll want a tripod after the first 15 minutes of trying to carry and shoot. My highest recommendation for sure.
Rating: Summary: Fast, sharp and solid with IS to boot Review: This is the best lens you can get in this zoom range for the Canon EOS. It's not the cheapest and it's not the lightest, but it's the best. This lens is fast, it has excellent optics, the build quality is very solid and the image stabilization (IS) feature works wonders for hand held shooting. If you shoot hand held in marginal light, this is the lens for you. If you always use a tripod, you don't really need IS -- take a look at the less expensive non-IS version of this lens. If you always shoot in good light, the lighter and even less expensive 70-200mm f4.0 may do the job for you. But for me, the extra stop of light and the IS make the difference between unusable images and great images. This is an awesome lens.