Pincushion distortion - PanoTools.org Wiki

# Pincushion distortion

From PanoTools.org Wiki

A lens distortion which causes straight lines outside the image center to be bent inwards (like a pincushion). Pincushion distortion is the opposite of barrel distortion.

It is a common Lens distortion that can be corrected by the lens correction model of panotools.

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A photograph showing exaggerated pincushion distortion
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