"helge_h" <nomail@nomail> wrote:
> A lot of artists has made so-called rayographs, but Man Ray coined the term and
> is perhaps most famous for making such images. The traditional process involves
> lighting some objects on top of a sheet of photographic paper, then developing
> the paper in the normal way. It's possible to mimic this process in POV-Ray by
> using a light-source with negative strength and a glowing surface below
> invisible objects.

Does it give good results to use transparent objects, possibly with caustics or
photons?  That could be neat, like the loupe or film pictured at your
references.  Simulation of photographic techniques always strikes me as neat,
and this is no exception.  Cool idea.

 - Ricky

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