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Camera Ray Perturbation

The optional normal may be used to assign a normal pattern to the camera. For example:

 camera{

   location Here

   look_at There

   normal{bumps 0.5}

 }

All camera rays will be perturbed using this pattern. The image will be distorted as though you were looking through bumpy glass or seeing a reflection off of a bumpy surface. This lets you create special effects. See the animated scene camera2.pov for an example. See "Normal" for information on normal patterns.

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