I bought this lens described as C mount and I bought a C to EOS M adapter, but the screw mount is too small for the inner diameter of the adapter as pictured here.

Can you please help me identify this mount? Is this a D mount? If so, how can I mount it on my EOS M?

not quit sure if it is D mount or not

  • 1
    Would be helpful if you add a photo of the mount without the adapter obscuring it. – xiota Aug 17 '20 at 8:59

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