Macro adapter M52 to M12

thingiverse

This is an adapter to attach M12 lenses (Board lenses/ S-mount) in front of a camera objective, to work as super-macro. It has a 52mm x 0.75 male thread, that screws into the filter thread of camera lenses. And a female M12 x 0.5 thread inside, where to screw in the M12 lens. Two version: One is flat /minimum height, the other is 15mm high (flange-to-flange). With a 10mm M12 lens mounted (inverted) on a 50mm dslr lens, give you a nice 5:1 supermacro. You can achieve the same adapter with a stack of commercial metal rings: m12 -Cmount + Cmount-M42 + M42-52. Print it with fine resolution, as the small thread need some precision. They do not need raft or support (but check the orientation!)