回复：关于选购Canon镜头.

The following is the ogiginal recomendation from Scott Kelby who is Editor-in-Chief and Publisher of Photoshop User magazine, Editor-in-Chief of Nikon Software User magazine and a professional photographer.

"Does buying a really good lens make that big a difference in sharpness? Absolutely! A few weeks back I went shooting with a friend in Zion National Park in Utah. He had just bought a brand new Canon EF 24-70MM f/2.8L, which is a tack-sharp lens. It's not cheap, but like anything else in photograph,the really good stuff costs more. His other lens was a fairly inexpensive telephoto zoom he had been using for a few yeas. Once he saw the difference in sharpness between his new, good quality lens and his cheap lens,he refused to shoot with the telephoto again.he had been shooting with it for years,and in one day, after seeing what a difference a really sharp lens made, he wouldn't shoot with his old lens again.".
If you check the lens review from consumers, it is very impressive!