Lewis wrote:
> 
> I am having trouble creating the HF as a 16-bit grayscale. It has 256
> colors (8 bits) but I can't get more for some reason. How do I ??
> 

As Bob said, you should use "hf_grey_16 on" when generating the heightfield with
Povray. With png output, you have to use +fn16 to get 16 Bit grayscale output.  

IIRC the black parts in the heightfield are a known problem, there were some
posts about that in the past:

from p.a-u:
Topic: Height field bug?
Date:  Fri, 28 Apr 2000 23:00:46

from p.b.i:
Topic: height field problem - 2-11K jpegs
Date:  Wed, 31 May 2000 21:33:19 

Christoph

--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/

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