> Next, if it's an outdoor scene (on Earth), I make a blue
> area_light and place it in such a way as to give the impression
> blue light could only come from that direction.

Hmm, from what direction?  How can I choose an arbitary direction for the
blue light, when physically, most skylight comes from the same place as the
sun?

> In this scene I made it look like the sky could only
> shine effectively from direction <1,1,1>.

Is that opposite from the sun, in this case?
Thanks for the info and all the pictures you're posting!  :o)

Regards,
Hugo

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