Bidski wrote:

> can POV-Ray do transparent backgrounds?

yes, render with command line option +ua (and a file
format such as PNG that supports transparency). If the
ray doesn't hit an object the pixel will be transparent,
although there are some tricky details regarding things
like anti-aliased pixels. And with a transparent object,
there may be additional issues such as not correctly
showing refracted parts of the new background.

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