bob h wrote:
> Question:-):
> You didn't say if that's photons or caustics,

Photons, of course.

>and if photons I suppose none
> were used for reflection of the sphere and floor both.

Right.

>Maybe that could
> explain a difference about the ceiling.

Hmm, maybe. Not only. Maybe the settings used were not so *extreme*, after
all that scene, IIRC, took something like 20 minutes to render...


>And although it is radiosity used
> there I'd guess you also had to use a light_source too, or not?

Yes.
It's simply a slightly modified version of Kari's cornell box.

--
Jonathan.

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