Is it possible to use 3D Max as a plugin for Luminar (https://macphun.com/luminar)?
Found no info about it. Any ideas?
I Did not understand that question. Sorry.
Your link shows a post processing tool for RAW photos from a camera. If this tool can add the output formats of KeyShot then there's no need of a plugin.
The Max-plugin transfers the geometry and some material infos like textures and other stuff to KeyShot.