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> Using the HDR export plugin for Terragen, I obtained a much larger range
in
> a sunset image, from rgb 0.3 to 166 (on the sun itself), similar to the
one
> observed in actual HDR probes.
povray radiosity is not very well suited to handle such situations with
small bright area, as it samples rays evenly in all directions. It would be
more efficient to send more rays toward the high intensity areas (the sun
here). In the case of image lighting we know where those zones are so there
is probably room for algorithm improvement..
and for your white sky you need the expose patch from megapov 1.0 :)
M
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