All this is good to know.  I too was wondering about it.

Bob

"Nathan Kopp" <Nat### [at] Koppcom> wrote in message news:392095a0$1@news.povray.org...
{ Of course, if the light source you use had a brightness of 1.5 instead of
{ 1.0, then you'd want to use 0.53 * 1.5 for that value.
{ 
{ -Nathan
{ 
{ TonyB <ben### [at] panamac-comnet> wrote...
{ > brightest_ambient_object = average of the RGB of the brightest color times
{ > its diffuse. Quoting from Mark Wagner's message to me, this means:
{ >
{ > "An object with a color of < 1, 0.5, 0.5 > and a diffuse of 0.8 would have
{ > an average color of 2/3 and a total brightness of 8/15 or 0.53.  An object
{ > with a color of < 2, 2, 2 > and a diffuse of 0.25 would have an average
{ > color of 2 and a total brightness of 0.5.  If your scene consisted of only
{ > those two objects, you would use 0.53 for the brightest_ambient_object."
{ >

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