Hi this is a recent test I did for TNG Visual Effects, which offers 3D scanning services for film and tv production. The test consisted in reorienting, retopologizing, unwrapping, sculpting, optimizing and finally texturing a 3D scan of a head.
I learned a lot during this process, mainly the use of ZAppLink and Projection Master in ZBrush, as well a masking texture cavities to obtain detailed 3D information from photographs. The render was done in Zbrush in only one pass. I used the SkinShader Matcap for the head and they ToyShader for the eyes. I also played with the Fog option to give some colour to the scan and the background.