The v3 lens focus can be adjusted remotely in software using Prusalink, which makes it a bit easier to setup. I choose the v3 NoIR camera so I can optionally run it with IR lighting and not be bright at night during long print jobs.
I've included two STLs: one for the cover to fit this camera, and one for the Pi Camera Module v3 Wide itself. I couldn't find the STL for the module anywhere, but created them using OpenSCAD from the dimensions in the datasheet.
The author remixed this model.
Minor modification to the original camera cover to fit the Pi v3 Wide Angle lens which is much thicker than the v2 camera lens. It snaps in place, just like the original.