Dagnabit, where's mah squirt bottle? :lol:

That actually is a good point, AND addresses a REAL weakness of poser.  Poser doesn't have Global Illumination, or any kind of radiosity.  That is a real weakness for renders done in Poser. Vue might help a little depending on what kind of render you're doing.

Unfornately ,it chokes and dies on larger poser scenes.. Free render engines, I don't know diddly about. I've heard that Blender can do it, but I'm not sure how much of IT it can do.

This is a topic best suited to Art Theory, maybe.  Light and uses is a vast subject, not suited to this thread.  Thought it is something that should be mentioned at least in passing.

I cannot save the world. Only my little piece of it. If we all act together, we can save the world.--Nelson Mandela
An  inconsistent hobgoblin is the fool of little minds
Taking "Just do it" to a whole new level!