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Classic Camera Repair » Archives-2007 » Tamron 105mm f/2.5 aperture won't stop down - fix? « Previous Next »

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Xwxobs
Tinkerer
Username: Xwxobs

Post Number: 1
Registered: 06-2007

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Posted on Saturday, June 09, 2007 - 09:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Recently I picked up a beautiful Tamron Adaptall 105mm f/2.5 on eBay that will not stop down. Manually turning the aperture does nothing. It clicks, but the aperture does not change. It does not matter if I switch the lens from the "A" to the "M" position. Having an Adaptall mount on or off the lens has no effect either. I've tried everything I can think of and it remains wide open. Does anyone have any suggestions for a fix? The lens model is CT-105 and the only info I could find for it is here:

http://translate.google.com/translate?hl=en&sl=ja&u=http://www.tamron.co.jp/data /old-lens/ct105.htm

Thanks!

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