Now, lest someone think I'm kidding, here is a comparison of the exact scene, exact skin (La Femme Another Look), exact light (background only), hair (Leticia hair) and figure (La Femme Pro) rendered in Poser 12:

And in Poser 11:

That hair was released after Poser 12 came out and I know the vendor puts out quality product, always. And yet the hair looks like crud under basic background node natural lighting in Poser 12. Looks like it was made of fake velvet strands that are sort of clumping together. Likewise the skin lost its natural hue and has a washed out pallor to it.

Now mind you, the rendering time is much faster 8n Poser 12. But if out of box materials that work fine if Poser 11 are broken in P12, not sure it's worth it for those who can't just jump into the material room and casually tweak it.