> >> Filtering and scattering media never react to radiosity, they need actual
> >> lights. Emissive media can illuminate radiosity if you use "media on" in the
> >> radiosity block.
>
> > /> I use massive amounts of emitting media in the scene for flame effects,
> > and it does render rather slowly, but I've learned to live with it,
> > considering the effects.

While it's true that none of the three media types *react* to radiosity
lighting, both emission AND scattering media can *contribute* to it.  But
scattering media does that only if lit by light sources. Otherwise, it has
no effect. I think that's what Alain meant to say.

Is it possible to reduce the number of samples in your media (without
causing visual problems)? That would reduce rendering time somewhat.

Ken W.

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