Definition: A lens aberration or defect that causes straight lines to bow outward away from the center of the image.
Definition: one of the common lens aberrations, where straight lines at the edge of the field are caused to bend into the shape of a barrel.
Definition: Image distortion that spreads the center dimensions of the picture.
Definition: one of the common lens aberrations, where straight lines at the edge of the field are caused to bend into the shape of a barrel.
Definition: Image distortion that spreads the center dimensions of the picture.

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