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05-24-2011, 03:36 PM   #1
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2X auto Focus converter

Did Pentax's make a 2X AF converter for their lenses so when placed an lens like 70-210mm F- Takumar lens F4-5.6

I hope this is the right place to ask this: thanks

05-24-2011, 04:27 PM   #2
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No, but they did make a 1.7x AF converter


Last edited by Kim C; 05-24-2011 at 05:06 PM.
05-24-2011, 04:34 PM   #3
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QuoteOriginally posted by Kim C Quote
No, but they do do a 1.7x AF converter
The production of the 1.7X AF adapter is very limited, if in fact it is still made new, it is not readily available. Also the 1.7X adapter has some specific parameters to maximize its functionality. With the lens you mention it may not function in auto focus mode.
Pentax did make some 2X converters that you can see in the review section but none of them are autofocus to my knowledge.

Pentax Pentax K-mount Teleconverters and Adapter Lens Reviews and Specifications - Pentax Lens Reviews & Pentax Lens Database

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