Tamron 70-200mm and 90mm teleconvertor

schmikey · 08-02-2016, 03:51 PM

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

Chuck-B&H · 08-04-2016, 01:44 PM

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

08-02-2016, 03:51 PM	#1
schmikey Senior Member Join Date: Jun 2007 Location: Toronto, Ontario, Canada Photos: Gallery Posts: 159	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

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08-04-2016, 01:44 PM	#2
Chuck-B&H B&H Photo Specialist Join Date: May 2010 Location: New York Posts: 935	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