"james lake" <gum### [at] sprintmailcom> wrote:
> However, when I run the animation I notice the metallic surface of the object
> picks up the Greenish color of the background.  To prevent this, I chose these
> settings:

You probably want to play with no_image, no_reflection, and no_shadow keywords.
Use two backdrops: a green one with no_reflection so it is not reflected, and a
second with no_image so you only see its reflection.  Attached is a very quick
example of how you could use this to achieve a green backdrop on a reflective
object.

 - Ricky


camera{
    location <0,2,-3>
    look_at <0,1,0>
}
light_source{<1,10,-1> rgb 1 shadowless}

//Ground + sky:
sphere{0,1
    pigment{
        gradient y
        color_map{
            [0 rgb <0.8,0.5,0.3>*0.9 ]
            [0.499 rgb <0.8,0.5,0.3>*0.7 ]
            [ 0.5 rgb <0.6,0.6,1.0> ]
            [ 1 rgb <0.2,0.2,0.7> ]
        }
        scale y*2
        translate -y
    }
    finish{ambient 0}
    scale 50
    no_image
}

//Reflective sphere:
sphere{y,1
    pigment{rgb 1}
    finish{
        reflection 0.8
    }
    finish{ambient 0}
    no_reflection
}

//Green background:
plane{-z,-10
    pigment{ rgb <0,1,0> }
    finish{
        ambient 1
        diffuse 0
    }
    no_reflection
    no_shadow
}

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