{
  "camera": { 
    "image_width": 1920,
    "image_height": 1080,
    "anti_alias_rate": 1,
    "max_depth": 10,
    "fov": 90.0,
    "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": [
    { "type": "metal", "albedo": { "x": 0.2, "y": 0.4, "z": 0.8 }, "prob": 1.0, "fuzz": 0.1 }

  ],
  "objects": [
    { "type": "sphere", "center": { "x": 0, "y": 0.7, "z": -0.4 }, "radius": 0.2, "material": 1}
  ]
}