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09-17-2009, 08:44 AM   #1
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Extension tubes with "A" contacts - which one??

IŽam looking for automatic extension tubes with electronic contacts/ "A" metering.
I found these:

Vivitar AT -22 (only some of them have A contacts)
Kenko ext. tubes with AF function (expensive)
Macro Automatic Extension Tube Rings for Pentax K (expensive)


Other possibilities?

09-17-2009, 09:06 AM   #2
Ash
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Where have you found these available?
09-17-2009, 10:11 AM   #3
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QuoteOriginally posted by Ash Quote
Where have you found these available?
Seems everyone is looking for them this days
09-17-2009, 10:29 AM   #4
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Must be all those fantastic real close up macros being posted up using them.

09-17-2009, 11:31 AM   #5
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These are very tough to find. I'm not sure I know the difference between them...if anyone could explain the differences I'd appreciate it.
09-17-2009, 02:45 PM   #6
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Yes, IŽam looking for one for my macro setup.
VIvitar AT-22 with "A" contacts is really hard to find
(same as Kenko).
LAst one is from a man from Poland but about 200 USD, really expensive
09-17-2009, 03:13 PM   #7
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Adorama has the Pro Optic AF set on back order:

http://www.adorama.com/MCAETPX.html

Tristate Camera has the Kenko - 25MM AF EXTENSION TUBE F/PENTAX in stock for $79

http://www.tristatecamera.com/lookat.php?refid=8&sku=KENAFUT25P

And lastly, 2 new sets of manual extensions on ebay for $20 ea:

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=250404637661

Last edited by ivoire; 09-17-2009 at 09:15 PM.
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