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02-08-2014, 03:55 PM   #1
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PENTAX auto extension ring K set 30535

Does anyone have any information on the PENTAX auto extension ring K set 30535? I have seen them for around $510.00 on Amazon but all shipments appear to be from Japan.

Thanks

02-08-2014, 04:02 PM   #2
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If these are the tubes you mean - mine cost $75 in the Marketplace. That Amazon deal is either a mistake or a scam.
02-08-2014, 04:31 PM   #3
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They are being sold from several Japanese stores. I assumed for the price that they had auto function like the $500.00 Nikon extension tubes. I have seen no feedback on them anywhere. My question is does the electronic metering actually function? I have seen many extension tubes that are manual only in the lower price range. Is the PENTAX auto extension ring K set 30535 actually manual?

Thanks

---------- Post added 02-08-2014 at 04:38 PM ----------

I found some of my answers at this site
How *Auto* Are Pentax Auto Extension Tubes? - Photography Stack Exchange
02-08-2014, 04:43 PM   #4
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I have no knowledge of these particular extension tubes, however I do have the Kenko set which do have the contact points and the metering does work. These are no longer manufactured but do come up for sale on rare occasions.

$500 is a stretch - I paid <$200 new some years ago.

Hope that helps.

02-08-2014, 05:07 PM   #5
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You can find Vivitar tubes with the A contacts as well.

What I do is remove the glass from cheap teleconverters.
02-08-2014, 06:35 PM   #6
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The link with info you found is correct. "Auto" simply means the tubes have a mechanical connection for the diaphragm actuator. A set in good condition with case might be worth $100 or a bit more, but not much more.
02-08-2014, 07:47 PM   #7
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I saw those on Amazon as well for arbout $500. I bought an NOS set on ebay not too long ago for $75. They do not have any electric contacts
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