There's also a review of the new 17-40mm f4L from canon you should check out. Performance is equivalent to the 16-38, price is half. If you can live with out f2.8, this lens (and the price) is awesome.There is are v comprehensive reviews of various Canon lenses, including the 16-35mm f/2.8 (roughly equivalent to 25-56mm) .
-- Jeff Smith
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