Sony E-Mount Microscope Head Adapter by nik282000
www.thingiverse.com
Many adapters re-use the head and prisms of the microscope which leads to loss of light and aberrations, this direct mount projects the microscope's image directly onto the sensor giving the best picture possible. The dovetail on the microscope side is "standard" sized for Olympus heads, ~42mm wide at the bottom, 6mm deep and with a 60 degree angle. It should fit most eBay microscopes as well.

I was gifted an unused Ender 3 Pro two weeks ago and managed to model and print an adapter to connect Sony E-Mount cameras onto a 42mm dovetail used by microscopes.

Bed adhesion, leveling, stringing, clearance issues, blobs and permanently welded supports, I got to battle it all but thanks to the massive volume of community support I worked my way though.