well your preview window is just that.. preview.. if the shader is very basic and doesnt use much in the way of posers features. it will look pretty similar once rendered... This is a bad thing unless you want your renders to look like poser 5 or DS renders. Those funky looking ones in the preview window will often render out much better as long as you set up your lighting and settings correctly. Sub surface scattering, IDL and GC in PP2012 make for some fantastic renders.

SSS shaders can be very worth it, though I cant comment on specific packages. SSS is basically the scattering of light withing the surface of an object. How it works in poser? ... math math math AWESOME!!! that is to say.. I dont know exactly but it does!

Forum: Poser - OFFICIAL

Subject: 2 questions about skin shaders