| This should be physically correct except for the shadow in the water
| (since the light rays do not bend when calculating shadows).
| So I tried using photon mapping to get the physically correct shadows.
| But as you can see, the stick is shadowed. Why?
The highlighting inside the bowl is also dimmed. I'd think it were
'ignore_photons' being used but I don't see why the highlight would be
affected anyway.
Bob
