Thanks, i've tried that now but the resulting PGM file is still only 8 bits
even though i specify +FN16 in the box next to the resolution selection. (I
added hf_gray_16 as a global setting in the .pov file).
Any ideas how to output a 16 bit grayscale?!
Also, is a heigh field true grayscale?

ingo <ing### [at] tagpovrayorg> wrote:
> in news:web.42ba7dee896faa69e5987fa60@news.povray.org Ryan wrote:
>
> > a way
> > to force POV-Ray to generate a grayscale rendering, not color?
>
> hf_gray_16 + png output should do the trick
>
> Ingo

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