My swirlieface bust, rendered in Mental ray and then some Nuke comp. I ended up with going for a lower resolution displacement map and a 4 k normalmap for the details. Mental ray gets really cranky when it comes to rendering displacment maps so I thought I could cut my poor putie some slack that way.
I wanted a bronzie, old look so I used the mia material shader with maps for diffuse, reflectivity and as mentioned normal map for the bump. In Nuke I only used the beautypass, and an extra lightpass.