Testing the Sigma 17-70mm f/2.8-4 DC Macro OS Lens

ISO 12233 Resolution Chart, Lens Specifications and Measurements and Standard Product Image Tools have been added to the Sigma 17-70mm f/2.8-4 DC Macro OS Lens Review page.
Posted: 7/23/2010 12:11:38 PM CT   Posted By: Bryan
Posted to: Canon News
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