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help!!!

 
Post new topic   Reply to topic    conurus Forum Index -> Contax N to Canon EF Mount Conversion
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urbantina



Joined: 16 Jan 2013
Posts: 4
Location: hollywood

PostPosted: Wed Feb 13, 2013 1:21 am    Post subject: help!!! Reply with quote

I bought a conurus/ contax lens 28-80 mm / 3.5 ...and it's not functioning now ...where can i get it done or maybe buy the part ... i needed to replace the flex circuit ...please let me know ..thank you
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conurus
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Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Fri Feb 15, 2013 7:11 am    Post subject: Reply with quote

Hi,

Can you give more details regarding what is not working? e.g.
1, AF not moving, but produces only a whirling sound?
2, Can you stop down the aperture by pressing the DoF button?

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I am a bird and I uncovered the E, EF and N-mount communication protocols!
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urbantina



Joined: 16 Jan 2013
Posts: 4
Location: hollywood

PostPosted: Mon Feb 18, 2013 7:52 pm    Post subject: flex circuit Reply with quote

well used it then it shut down , no light coming thru the lens ..after i tried adjusting aperture manually thru the barrel , nothing happened . Anyway i ask someone to do repair . he said that that the flex circuit was cracked . please advice what to do . thanks
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conurus
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Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Mon Feb 25, 2013 6:08 pm    Post subject: Reply with quote

The aperture ring on the lens barrel is not used to adjust aperture. Are you able to turn the aperture dial on the camera body? Does the camera body display any aperture?
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urbantina



Joined: 16 Jan 2013
Posts: 4
Location: hollywood

PostPosted: Wed Mar 06, 2013 10:25 pm    Post subject: reply Reply with quote

The aperture ring on the lens barrel is not used to adjust aperture. Are you able to turn the aperture dial on the camera body? Does the camera body display any aperture?


yes i can also it also display aperture. i have tried to put it on higher ISO 2500 and it works in the sunlight but the shutter do not open up as much anymore . let me know what needs to be done. thank you
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conurus
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Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Thu Mar 07, 2013 8:12 pm    Post subject: Reply with quote

Thank you for the additional information.

So, the camera body could display aperture values from f/3.5 to f/22 without a problem, but the lens itself remains stopped down?

If that is the case, it sounds like there is a problem with the electromagnetic aperture diaphragm. (It might as well be a broken flex cable to the aperture diaphragm.) Either way only Contax Japan will be able to fix it, and Contax Japan doesn't take modified lenses. We will need to deconvert it back to N mount first and forward the lens to them on your behalf.

If you wouldn't mind sending me your lens' serial number by PM, I will send you our address.

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urbantina



Joined: 16 Jan 2013
Posts: 4
Location: hollywood

PostPosted: Tue Mar 12, 2013 5:47 pm    Post subject: If you wouldn't mind sending me your lens' serial number by Reply with quote

i have send you the serial number thru inbox /PM . please let me know the next step. thank you
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