Kyle wrote:
> 
> Hi everyone.  I have a quick question.  Is there any way to have POV-Ray
> render in black and white?  I'm thinking about submitting an IRTC image
> in black and white, but since post-processing is not allowed, I don't
> see a good way to do it.  Is there some setting in POV-Ray for this?  Of
> course, I can just give all the objects a greyish color but I don't
> think that would come out very nicely.  Well, if anyone has a suggestion
> I'd be very grateful to hear it.
> 
>                 Kyle

  I did an image I think last December that was titled I believe "Black
and White Povatography". It is in the images group. In that I explored the
wonderful world of black and white photography as represented in a raytracing
program that is commonly used for color image production. Anyway My solutions
was of course to use shades of gray for all objects in the scene. It's really
not that difficult to do since all of your pigments can be designed using a
single rgb float value - pigment{rgb .5} would be 50% gray for example.
The most difficult part is choosing the correct finish statements and lighting
models to get the same sharp contrast that b/w photos are famous for. Getting
sharp shadows is a trademark item for b/w photos that I had trouble recreating.
I think there is a certain limitation in the represention of b/w images on
an electronic medium but that is a nother story.
 As far as special settings for Pov I know of no setting that will allow a
256 shades of grey pallet or display output as used as the standard for
electronic b/w image reproduction.



-- 
Ken Tyler

mailto://tylereng@pacbell.net

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