3D Scan rendered in a virtual studio.
Here you see all 8 million polygons with a Clay Material inside a 3D Sculpting Program.
To use 3D Models efficiently it is a good Idea to have different versions with different Level of Detail (LOD). That way the model with less resolution can be used in the background. This is especially important for Game-Assets and Virtual Reality applications.
This is how the 3D Scan looks like with image based lighting.