> > Why is it not a target? The light goes through the glass, then through
the
> > water, then through the glass again. The water should be a target for
> > photons.

As long as the water *accepts* photons:

object {
    water
    photons {
        reflection on // probably doesn't matter for this scene
        refraction on
    }
}

then it doesn't need to be a target. I'm sure the water is completely
surrounded by the vase, so any photons shot towards the water would
eventually hit the vase anyway, making it pointless to also shoot at the
water.

As for the photons+dispersion problem, perhaps if you gave some sample code,
we might be able to help more?

- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]

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