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01-23-2012, 10:26 AM   #1
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New Vivitar AF 1.4x converter

I noticed Adorama & B&H are selling a new Vivitar 1.4x converter that is AF and PK A mount. It should pass information from the lens to the camera. I have not seen any reviews of this product. Given the large difference in IQ between converters, I am curious about this item. Anyone out there have any experience with it? It seems all the good ones are out of production, rare and high priced.

Thanks,

Pentax Bob

01-23-2012, 10:43 AM   #2
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I believe this is the same unit as the Pro-Optic converter as discussed here and here, and reviewed here.

I believe it is also the same in all respects but working PZ contacts as the Kenko and Tamron MC4 units that are often discussed and traded.

I have the Pro-Optic TC and haven't seen any actual copies of the others, but from photos they all appear identical. Again, with the difference of the PZ contacts.
01-23-2012, 08:51 PM   #3
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There was a forum member, @ Greyser, who reviewed this and posted some pics with the TC and his f* 300mm f4.5. It seemed to be a good converter.
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