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slack btween conurus metabones adapt conurus contax 24-85

 
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docmaas



Joined: 26 Apr 2008
Posts: 11

PostPosted: Sat Apr 13, 2013 2:17 am    Post subject: slack btween conurus metabones adapt conurus contax 24-85 Reply with quote

And it is causing me a lot of grief. The contacts fail when the lens shifts resulting in having to reset some of the settings on the camera.

The fit between the camera and the adapter is tight but the fit between the 24-85 and the adapter has slack. Moving it back and forth results in the connections working correctly and then not working correctly.

The flange of the 24-85 is tight and the flange on the adapter is tight as well.

Any ideas?

Mike
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conurus
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Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Sun Apr 14, 2013 2:06 am    Post subject: Reply with quote

Thank you for your problem report. Was this Metabones Mark I or Mark II? Also would you mind sending me the serial number of the 24-85 by PM please? Thanks.
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docmaas



Joined: 26 Apr 2008
Posts: 11

PostPosted: Sun Apr 14, 2013 2:32 am    Post subject: Reply with quote

Metabones is Mk 1.

serial on 24-85 is 12697856

thanks,

Mike
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conurus
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Location: Vancouver, Canada

PostPosted: Sun Apr 14, 2013 11:01 am    Post subject: Reply with quote

Thanks for the additional information.

The early Mark I adapters are not as tight on the Canon side. Please inspect the 3 leaf springs under the 3 bayonets of the Canon mount. Do they look flat or do they look curved? Later units had curved leaf springs which are much stronger and makes for a much more rigid connection between the Canon mount lens and the adapter.

You may send the adapter back to Metabones for a fix, or if you wouldn't mind installing it yourself, you may ask them to mail you 3 curved leaf springs. (Assuming you currently have flat ones.)
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docmaas



Joined: 26 Apr 2008
Posts: 11

PostPosted: Thu Apr 18, 2013 7:42 am    Post subject: springs appear to be curved up. pic enclosed Reply with quote

I also have a 17mm Tse lens that has no problems but of course the only electronics it uses is the aperture control. The contax lens is manual focus only and I usually see the problem when I grasp the zoom ring instead of the focus ring.

I seems much more difficult to reproduce the problem with the lens pointing down rather than forward which might indicate the problem is the springs on the metabones adapter.

Here is the image:

thanks,

Mike
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conurus
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Location: Vancouver, Canada

PostPosted: Fri Apr 19, 2013 12:55 pm    Post subject: Reply with quote

Yes that's the old Mark I straight leaf springs. I would suggest writing to support@metabones.com and ask them to mail you the new curved leaf springs. Should be easy to install by yourself. You may say Bo-Ming Tong referred you to them. Thanks!
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docmaas



Joined: 26 Apr 2008
Posts: 11

PostPosted: Fri Apr 19, 2013 2:51 pm    Post subject: Reply with quote

Will do. Thanks for your help.

Mike

conurus wrote:
Yes that's the old Mark I straight leaf springs. I would suggest writing to support@metabones.com and ask them to mail you the new curved leaf springs. Should be easy to install by yourself. You may say Bo-Ming Tong referred you to them. Thanks!
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