Sven Littkowski <I### [at] SvenLittkowskiname> wrote:
> Look at the two attached imagea. I have white lumber, but when using
> radiosity (1st image), the white lumber glows and simply emits too much
> reflected indirect light. The 2nd image shows the same scene without
> radiosity.
>
> is there a way to reduce the amount of reflected indirect light?

Hi Sven,

First - you need a background - a sky_sphere or a simple color.

Second - you use a phong_size of 0.5. I recommend a number larger than 100.

Third - you should reduce your standard diffuse to less than 2 - and rise
light_source accordingly. Personally I use this combination for a first shot -

#declare lights = <-80000,50000,-50000>;
light_source {
        lights,
        color srgb <2.42,2.23,1.87>
}

sky_sphere {
        pigment {
                function {max (min (y, 1), 0)}
                color_map {
                        [0        srgb <212,221,239>/255]
                        [0.1029   srgb <219,229,244>/255]
                        [0.1512   srgb <233,241,250>/255]
                        [0.1949   srgb <223,239,252>/255]
                        [0.2444   srgb <201,227,252>/255]
                        [0.2921   srgb <180,213,250>/255]
                        [0.3732   srgb <144,180,239>/255]
                        [0.4255   srgb <137,172,235>/255]
                        [0.7067   srgb <97,126,198>/255]
                        [0.774    srgb <92,119,190>/255]
                        [0.8275   srgb <88,114,185>/255]
                        [0.885    srgb <85,111,180>/255]
                        [0.9425   srgb <82,107,175>/255]
                        [1        srgb <79,103,170>/255]
                }
        }
}

Norbert

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