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Vivitar Auto Extension Tubes AT-22 $75 shipped
Posted By: Stavri, 03-06-2015, 09:41 AM

Nice set of Tubes without -A pin. These have the black mount, people complain about contact issues with these tubes. It is recommended that the black paint should be stripped for better performance.

Vivitar Auto Extension Tubes at 22 Pentax K Mount Excellent Condition | eBay

Last edited by Stavri; 03-06-2015 at 11:31 AM.
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03-06-2015, 11:28 AM   #2

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These are the ones without contacts. AT-23 have contacts.
03-06-2015, 11:31 AM   #3
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QuoteOriginally posted by vonBaloney Quote
These are the ones without contacts. AT-23 have contacts.
Corrected, thanks
03-06-2015, 11:33 AM   #4
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They are called "auto" because they have the auto stop-down lever.

03-06-2015, 10:01 PM   #5
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I have a set of these. They are KM mount and meter nicely using the green button exposure.
04-14-2015, 01:33 PM   #6
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QuoteOriginally posted by vonBaloney Quote
These are the ones without contacts. AT-23 have contacts.
Some of the at-22s have contacts

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