 Pincushion Distortion | ||||
Pincushion distortion is a lens effect which causes images to be pinched at their center. Pincushion distortion is associated with tele lenses and typically occurs at the tele end of a zoom lens. The use of converters often amplifies the effect. It is most visible in images with perfectly straight lines, especially when they are close to the edge of the image frame. See also the opposite effect, barrel distortion. |
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Pincushion Distortion at dpreview.comWe measure pincushion distortion in our reviews as the amount
a reference line is bent as a percentage of picture height. For most consumer digital cameras, pincushion distortion is lower than barrel distortion with 0.6% being a typical value.
Correcting Pincushion DistortionPincushion distorted images from virtually any digital camera can be corrected easily using software, e.g. Adobe Photoshop CS2. |
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Article ©1998-2009 Vincent Bockaert and dpreview.com, with permission. | ||||
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Learn : Glossary : Optical : Pincushion Distortion |
Learn : Glossary : Optical : Pincushion Distortion
