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Lens dirtortion effect
by Jean-Sebastien Perron
Date Added: 2/6/2007
Category: Rendering
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If you need to do a wide angle shot or a fishey distortion.
You can simulate a real lens by actually creating one in 3D and putting it in front of the camera.

To do this create a fully transparent material and set the refraction to look like glass.

Then create a sphere, apply the material and put that sphere in front of the camera (adjust the position of the sphere to your liking).

Voila!