"I'll set up a shader thread over there where we can discuss converting between DS and Poser."

pendraia, I respect you for your serious workmanship. You you don't feel personally attacked only because I advocate Photoshop!

A shader thread at Hivewire sounds nice. Let us discuss together! I can always benefit by some shader knowledge which I have deliberately neglected before. I use a metal shader and know how to correct Poser displacement that's about the extent of my knowledge. Of course, once you are into shaders you need also to understand the shaders in Daz, the shaders in C4D, the shaders in ZBrush and so on and so forth. Life is short and art is long!

It was no readymade effect though. I added a 128,128,128 gray scale on top of your render and set the blend mode to overlay. Then I handpainted with a 10% white brush.