Surprise again! Sigma is REALLY making an impressive showing these days with it's newest lenses. The Sigma 70-200mm f2.8 BEATS Canon 70-200mm f2.8L IS USM on DXOMark.
BTW... I just checked the prices on BHPhoto and the Canon is $2499.99 and the Sigma is $1399.99. That's an $1100 price difference! (as of today May 9, 2011)
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