2. The Shader Settings.

To date, figures have been designed for Poser. DAZ Studio has better lighting
and surface control, and all figures require tweaking to render to best
advantage in DS.

Usually, the first tweak I do is change the "Lighting Model" attribute for each of the skin surfaces from the default "plastic" to "skin". The improvement is fairly dramatic, even with just the default light. (The Lighting Model is way down at the bottom of the Advanced tab in the Surfaces palette.)