I just want to elaborate a little bit more about the lighgting and tradeoff etc.

Obviously it's perfectly possible to create great lighting with non-physical renderers like Firefly, it has been done for years. The deal, though, is that it takes a much larger number of lights than with a physics-based renderer. Even when that is done by an experienced artist. It's just the matter of things. 

In Lux, if you want to have reflected light you simply place a plane, set it white glossy and, like in real life, you have a reflector. In Poser or even in other high-end program you might need to simulate it and that requires knowledge of the specific renderer. With Lux it's a matter of using real-life experience, which, IMHO, makes for a simpler approach.

The number of lights necessary is also much smaller. Possibly a quarter of what is needed with a biased renderer.

This is not meant to disparage any software, it's just a statement of fact and it's meant to highlight the savings in time obtained when using LuxRender and, consequently, Reality.

Hope this helps.

Paolo

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