Dragons

Showcasing an environment light - with no really intense illumination areas, hence the very diffuse shadows - and a selection of different coloured dragons in a metallic paint material (a varnishy paint layer on metal), including dielectric reflection, a dielectric layer with a diffuse BSDF and a microfacet-based dielectric layer.

Importance sampling still needs to be added to the environment light, so a large number of samples are needed to reduce the noise.