Hello Steve,

> These are quite amazing, but the water on top of the ring (not
> round the edges), appears to be misscoloured, I'd expect it to be
> dark and also to throw it's own shadow onto the metal,

This is an effect of the photons I think.

> I'll have a look around the net and see if I can find an example
> of what I mean about the internal shadow of the droplets.

Maybe I have to tweak the material a little bit, but first I will make
a photo of a similar real-life scene. But I used the constants from
POV-Ray for the water.
It could be an effect of the dispersion.

> Here is one:
> http://www.riecks.com/thumbs/h2odrop.jpg

Hm... I'm not very sure where the light comes from and at which angle.

Regards
Sven

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