|
Distortion (1625 words) |
 | Distortion is difficult to correct for in zoom lenses, which usually go from barrel at the wide end to pincushion at the tele end. |
| Distortion is measured as the relative change of h compared to its value predicted by the paraxial theory. |
| Distortion curve for the Distagon 2.8/21 (A, Zeiss data) and its derivative (B). |
| Pincushion Distortion: Optical: Glossary: Learn: Digital Photography Review (159 words) |
| 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. |
| We measure pincushion distortion in our reviews as the amount a reference line is bent as a percentage of picture height. |
Feeds |
Contact