Sigma 170-500 f5-6.3 APO

Stranger New Member Posts: 2	Sigma 170-500 f5-6.3 APO Sept 10, 2006 12:08:47 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Stranger on Sept 10, 2006 12:08:47 GMT -5 How do people rate this lens against the 50-500 as I already own a 70-300 it seems a bit silly to cover the same ground twice if only they did 300-500

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