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12-30-2011, 05:07 PM   #1
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M42-Pk mount broke and is stuck to Super Takumar 50mm

Title says it all and I can't get the mount off, any ideas how to get it off without breaking the lens?

Also the camera doesn't recognize the lens when I put it on

Last edited by jnigo; 12-30-2011 at 05:18 PM.
12-30-2011, 05:26 PM   #2
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Often it helps to use a K mount rear cap as a wrench to get the adapter off.

Have you set your body to aperture ring-permitted in the custom menu? If not the shutter won't release with manual lenses.

What part of the adapter broke?
12-30-2011, 05:38 PM   #3
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have you tried to loosen or remove the screw that holds the spingclip in place? that screw isn't supposed to poke through to the threads but, after a lot of use it can become a burr in the threads.
12-30-2011, 06:39 PM   #4
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Are the threads crossed? Possible on the cheap knock-offs as the threads are cut a little loose. As noted above a k-mount rear cap can sometimes help. If all else fails, use a dremel tool to cut the adapter in two places and it will just fall off. Be careful not to cut into the lens threads.

Post a picture and you might get better advice but
QuoteOriginally posted by jnigo Quote
broke and is stuck
can mean a lot of things.

12-30-2011, 06:53 PM   #5

Join Date: Feb 2009
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A possibility is that the adapter is installed to the lens backward. If this is the case, you need to depress a pin on the lens to rotate the adapter out. Let me me see if I can find a photo.

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