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The object in designing a field flattening lens is to create a lens that shifts the focal points of the Petzval surface to lie in the same plane. Consider inserting a pane of glass in a focusing beam. Due to refraction, the focal point of the beam is shifted by dependent on the thickness of the glass. Thus we have a thickness as a function of ...
This variation is called vignetting, and can be corrected by selectively brightening the perimeter of the image. Flat-field correction ( FFC) is a digital imaging technique to mitigate the image detector pixel-to-pixel sensitivity and distortions in the optical path. It is a standard calibration procedure in everything from personal digital ...
Grand Theft Auto V is a 2013 action-adventure game developed by Rockstar North and published by Rockstar Games. It is the seventh main entry in the Grand Theft Auto series, following 2008's Grand Theft Auto IV, and the fifteenth instalment overall. Set within the fictional state of San Andreas, based on Southern California, the single-player ...
July 24, 2024 at 10:09 PM. Robbie Ray returned to the mound Wednesday for the first time in more than a year. Although his strange no-hitter bid came up short, Ray successfully led the San ...
August 17, 2024 at 1:35 PM. U.S. Air Force security guards exchanged gunfire with someone who twice opened fire on an entrance to Joint Base San Antonio-Lackland early Saturday, according to a ...
The low hum of a high-tech engine greets you when you first open the door to the F1 Arcade in Boston’s burgeoning Seaport District. The people behind Puttshack golf and Flight Club darts are ...
Telecompressor. A telecompressor or focal reducer is an optical element used to reduce focal length, increase lens speed, and in some instances improve optical transfer function (OTF) performance. It is also widely known under the name “Speed Booster”, which is the commercial name of a line of telecompressors by the manufacturer Metabones.
The makers of Inside Out 2 presumably felt unbridled joy Wednesday after the hit movie surpassed Frozen 2 to become the highest-grossing animated film of all time. Released June 10 by Disney's ...