Thread: Teleconverter
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Old 09-26-2013, 09:36 PM   #12
mersenne6
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Join Date: Jul 2006
Posts: 69
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Yup, all the time - 2x. I use mine on an f2.8 200mm zoom so with DX I get 600mm and with the full frame I get 400mm. I haven't seen much in the way of sharpness issues but you do need a cool day and a rock solid tripod mount to keep everything sharp.
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