Christopher,
thanks for explanations (my English is 'as is') - also I don't use POV too
much in a last few years.
I hope I will have a chance to see some of your images.

best regards,
Anto
http://www.matkovic.com/anto

> > - POV-Ray have a default global ambient set to 1 (rgb 255), in
dinstinction
> > to many scanlines, where this is usually zero or dark grey. If you find
on
> > IRTC site some images with a dark, well saturated colors like an old
> > painting, this can be work of Jaime Vives Piqueres. He was used a global
> > ambient color set to zero.
>
> This value is actually a multiplier for the finish ambient values. If
> set to 0, it is the same as setting all ambient values in the scene to
> 0. 0.5 is equivalent to halving them. Or you could use a color to give
> the scene a specific color cast. It really doesn't do anything you can't
> do otherwise, and setting it to 0 makes it impossible to create glowing
> objects with radiosity. A better solution is to adjust the default
> texture values:
> #default {finish {ambient 0 diffuse 1}}
>
> This way, objects have no ambient light unless you specify it, and the
> pigment alone specifies the diffuse reflection. However, if you find out
> you *do* need ambient, for a glowing light bulb for example, you can
> still use it. You can also set the other texture items this way...for
> example, you could set the default pigment to be a seizure inducing
> candy-striped neon green and hot pink, which will quickly alert you if
> you forget to specify a pigment.
>
>
> > - POV values can go over 1 or lower to zero (something like rgb 788 or
> > rgb -200; not too much usable, but you may know that)
>
> Values greater than 1 are useful, especially with more accurate light
> simulation features such as radiosity. Real-world scenes have great
> variation in lighting, not a limited range.
>
>
> > - POV materials haven't independent  highlights color, this depend on
the
> > light color. In case of metallic finish, this do not depend (more
precisely,
> > 'near to do not depend').
>
> With metallic highlights, the surface color affects the highlight color.
> The light color is still important though.
>
> --
> Christopher James Huff <cja### [at] earthlinknet>
> http://home.earthlink.net/~cjameshuff/
> POV-Ray TAG: chr### [at] tagpovrayorg
> http://tag.povray.org/

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