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05-12-2012, 04:06 PM   #1
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645 A 2X teleconverter

I'm trying to find a downloadable users manual for a 2X 645 Pentax teleconverter. I've just bought a used one for my 645D but I can't seem to get it to autofocus - it will only focus manually. The converter is labeled A. I have set the lenses for A. I have tried the device with an older AF 80-160 lens AND with a new 55mm AF lens.

Help?

05-12-2012, 04:33 PM   #2
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The converter is labelled A not FA: it will not autofocus I'm afraid.
05-12-2012, 09:48 PM   #3
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2X teleconverter

Thanks. i have never purchased any teleconverters for any camera or lens. I just saw this one on eBay and thought it might be handy with my 80-160. The ad said it would focus both manually and automatically. The ad lied.
05-13-2012, 01:52 AM   #4
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In future, you may want to consult the database here: Rear Converter-A 645 2X Reviews - Pentax 645 Teleconverters and Adapters - Pentax Lens Reviews & Lens Database.

05-13-2012, 11:56 AM   #5
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2X teleconverter

I absolutely WILL look in the database in the future.
05-18-2012, 09:56 AM   #6
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As I understand it there are no FA teleconverters and Pentax has no intention of making any.

asahijock
06-11-2012, 06:56 PM   #7
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if you are not wedded to auto focus it works just fine.those who lived with nothing but manual focus, are rolling over in their graves over you wimps.
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