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Old 11-24-2009, 03:09 AM
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inkista inkista is offline
Gear Geek Girl
 
Join Date: Jan 2007
Location: San Diego, CA
Posts: 9,152
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I get mine off eBay from happypageHK these days. I've used big_is's chipped rings, too, with success, but I get a better fit with the happypage rings. Both of them offer programmable chips where you can set the max. aperture and focal length of the lens (also AF microadjust settings).
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I shoot with a Canon 5DmkII, 50D, and S90, and Pansonic G3. flickr stream and equipment list
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