M42 to EF-M adapter
thingiverse
***** UPDATE ***** V3 Now Included - This is the same Adapter Revamped from EOS-M C-Mount Adapter by Bootdsc which Works Seamlessly with Lens Release System Ensuring a Secure Fit on Camera until Quick Release Button is Pressed. This Remix of Creativedude's EF to EF-M Adapter Empowers You to Attach M42 Threaded Lenses to Your EOS-M or Any Other EF-M Camera, Delivering Good Infinity Focus and a Tight Robust Connection that Feels Exceptional.
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