Facebuilder is an (affordable) subscription plug-in for Blender (or Nuke) that can generate 3D heads from around 7 source photographs. Of particular interest to John, the plug-in has one-click integration with Reallusion's Character Creator 4 -- which makes Facebuilder an ideal tool for getting original (and real world!) faces transferred into the Reallusion pipeline.
Join along as John tries to achieve as "good" of results as possible, pointing out his mistakes along the way...so you don't have to make them!
Links:
Facebuilder Installation Video:
• Official FaceBuilder for Blender inst...
KeenTools Info:
https://keentools.io/
Reallusion Info (Character Creator 4):
https://www.reallusion.com