{
  "camera": { 
    "image_width": 1920,
    "image_height": 1080,
    "anti_alias_rate": 23,
    "max_depth": 100,
    "fov": 40.0,
    "look_from": { "x": -10, "y": 5, "z": 10 },
    "look_at": { "x": 0.0, "y": 0.0, "z": -1.0 }, 
    "vup": { "x": 0.0, "y": 1.0, "z": 0.0 }
  },
  "materials": [
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    { "type": "dielectric", "refraction_index": 1.5},
    { "type": "dielectric", "refraction_index": 0.67},
    { "type": "metal", "albedo": { "x": 0.8, "y": 0.6, "z": 0.2 }, "prob": 1.0, "fuzz": 1.0 }

  ],
  "objects": [
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    { "type": "sphere", "center": { "x": 1, "y": 0, "z": -1 }, "radius": 0.5, "material": 6},
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  ]
}