Canon EF mount to 28mm microscope eyepiece
thingiverse
This allows a Canon EF mount camera to fit OVER a 28mm outer diameter microscope eyepiece. I have tested this with my Swift SW350T, but I think it would work for any 'scope where the eyepiece is 28mm OD. There are provisions for 3x M4 nuts and 3x M4 screws to allow adjusting it higher or lower on the eyepiece (adjusts FOV), but it works without these. For eyepieces with other outer diameters it should be fairly simple to adjust the .f3d model to fit. The included picture is a salt crystal under polarized light at 100x magnification, downscaled from my Canon T1i/500D. Please let me know if there are any issues.
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