Check on the following I tried with your sphere:


global_settings {
        photons {
                spacing 0.02
        }
}

camera {
        location <0,2,-6>
        look_at 0
}

plane {y,-2 pigment {rgb 1}}

sphere {
    0, 2
    texture {
        pigment { color red 1 filter 1 }
        finish { ambient 0 diffuse 0
                reflection {0.1,0.3 fresnel}
                 }
    }
    interior { ior 1.76 }
    translate y
    photons {
        target
        reflection on
        refraction on
        collect on
    }
}

light_source {0,1.5
        area_light -<1,0,2>,<1,0,2>,4,6
        adaptive 1 jitter
        translate <3,2,0>/3
 photons {
        reflection on
        refraction on
        area_light
        }
}

I replied to povray.newusers before finding you also posted here, asking
whether this involved area_light.

bob h

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