> For example, disco mirror-balls and sequins on clothing catch light and reflect
> it.
> Also, silver glitter seems to refract light in a spectrum, not just white or
> silver.
>
> My intent is making a movie that has 'random' flashes and flickers.
>
> Thanks in advance for any suggestions.
>
> Leef_me
>
>

If you are only concerned with the visual flash, you don't need photons, 
only a strong, and relatively tight, specular or phong highlight.

You do need photons if you want to see the reflected beams on 
surrounding surfaces.

The facet normal pattern can be usefull. There are 2 versions, one for 
mostly flat surfaces and one for curved ones.

If you want to have coloured reflections, you can use the aoi pattern to 
have variously coloured reflections. The facet pattern can be usefull 
here also.

You can also use small transparent prisms with some ior and dispersion. 
Dispersion will increase rendering time, especialy if using photons.



Alain

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