Another little test.

//START////////////////////////////////////////////////////////////
background { rgb 0 }

camera {
 perspective
 up y
 right x
 location <0,0,-10>
 angle 3 //20 //48 originale
 look_at <0,0,0>
}

light_source {
  <0,0,-1.02>,
  rgb 0.75
  //spotlight
  //radius 1/1000
  //falloff 1/300
  //tightness 0
  //point_at <0,0,-1>
}

sphere {
  <0,0,0>, 1
  pigment { rgb 1 }
  ///*
  normal {
    //agate 0.5
    //granite 0.5
    wrinkles 0.5
    //dents 0.5
    //accuracy 1/255
    scale 0.01 //0.025
  }
  //*/
  finish {
  ambient 0.05
  diffuse 1.0
  //phong 0.9 phong_size 6
  specular 0.9 roughness 0.02
  }
}
//END////////////////////////////////////////////////////////////

The image shows a Light very close to the surface of a sphere.

1. A perfect Granite.
2. A perfect Agate.
3. A beautiful/strange Dents.
4. A mutilated Wrinkles. :-(

--
Carlo

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