This will be of interest to all new or prospective Canon 10D owners looking for a wide-angle lens. Michael Reichmann has reviewed the new Canon 17-40mm f/4L lens, which at $800 may be the default wide-angle solution for the richer 10D owner. That counts me out, especially as I’m happy enough with my Canon 20-35mm f/3.5-4.5 USM lens.

“Are these two lens samples representative? I can’t say for sure. I’ve been using my 16-35mm f/2.8L for many months and have been happy with the images it produces. Is it as sharp as primes in this focal length range? No, of course not. But it is very versatile, and I don’t hesitate to use it in demanding situations. The new 17-40mm f/4L is a welcome surprise though. At nearly half the price of the faster and slightly wider 16-35mm f/2.8L it provides excellent image quality, surpassing that of the more expensive lens in several areas.”

Website: Luminous Landscape - Canon 17-40mm f/4L Lens Review