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08-02-2016, 03:51 PM   #1
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schmikey's Avatar

Join Date: Jun 2007
Location: Toronto, Ontario, Canada
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Tamron 70-200mm and 90mm teleconvertor

Wondering what teleconverter is compatible with the Tamron 70-200m and 90mm? Any downside to using them?
Thanks
Mike

08-04-2016, 01:44 PM   #2
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Join Date: May 2010
Location: New York
Posts: 862
Hello;

I am assuming you need for Pentax mount.

You only have 2 options, the 1.4x HD PENTAX-DA AF Rear Converter AW from Ricoh or the 2x Manual Teleconverter from Bower.

The Pentax is expensive, has better optics and should support AF operation with your lenses. The Bower is stronger but will not be as sharp and is manual focus + exposure only.


Chuck
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