I use POVRAY to make images of straylight in optical systems.  The very low
intensity parts of the image are the most interesting.  Although the
information is present in the red/green image it is not visually
intelligible. It would be nice to have a POV output file format that was
logarithmic - but otherwise a *.exe utility which inputs the heightfield
and outputs an image file which is proportional to the log ( decimal or
natural )of 1 to 65535.

Is anyone able and willing and sufficiently interested to create one and
publish it?

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