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Revision as of 00:00, 24 March 2005 by Erik Krause (talk)

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Roll is the angle of camera rotation around it's optical axis.

If your camera is not level this can be in two directions:

  • the image is tilted up or down, resulting in a Pitch value different from 0.0
  • the image is rotated such that the horizon is not horizontal if held upright, resulting in a Roll value different from 0.0