Andrei - If you need to ask which is real, then I'm flattered :) The left is the photo.
For the dark areas hit by the laser, I used a pre-existing foam material. To refine this further I could try other normal maps or make my own.
Getting the illusion of the fingerprint depth could be improved perhaps if I assigned a slightly darker material to the vertical walls of the fingerprint ridges. The same texture applied to both the walls and the bottom seems to make it look flatter.
One thing that would add depth and realism is a small fillet on the fingerprint ridge edges at the surface of the ring. Because of the tight angles I'm not able to do that.
If anyone has any ideas how to do that, let me know.
Ed
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