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03-04-2012, 08:35 PM   #1
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How is the Sigma 70-200mm 2.8 OS with current Sigma 2x Teleconverter?

Will it be better then current Sigma 70-300mm supposing both at 300mm f/5.6?

03-05-2012, 12:17 AM   #2
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I think those Sigma 70-200 lens with HSM cannot fit for Sigma teleconvertor on Pentax mount....I have an old APO 70-200 2.8 lens which can work with Sigma 1.4 and 2.0 teleconvertor with pretty satisfied result....
03-05-2012, 06:59 AM   #3
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I see...good thing i asked first.
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