(from the article `aberration`) ...refers to deformation of an image. There are two kinds of distortion, either of which may be present in a lens: barrel distortion, in which ...
Found on
http://www.britannica.com/eb/a-z/p/69
<microscopy> A geometrical distortion in a video picture, or a form of optical aberration, that makes the middle of all sides of a square appear to bow inward. The distortion can amount to several percent of the picture height in some intensified camera tubes. ... See: Aberration, Distortion, Barrel distortion. ... (05 Aug 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
A lens aberration or defect that causes straight lines to bow inward toward the center of the image
Found on
http://www.encyclo.co.uk/local/21048
Type: Term Definitions: 1. irregular image produced when axial magnification is greater than peripheral magnification. See: Petzval surface
Found on
http://www.medilexicon.com/medicaldictionary.php?t=26189
A lens aberration or defect that causes straight lines to bow inward toward the center of the image. The opposite of barrel distortion; straight lines are bowed in toward the middle to resemble the sides of a pincushion; present in small amounts in some telephoto and telephoto-zoom lenses.
Found on
http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
No exact match found.
