Photog.
a hemispherical plano-convex lens for photographing in a full 180° in all directions in front of the camera, creating a circular image having an increasing amount of distortion from the center to the periphery.
[ 1960-65 ]
Photog.
a hemispherical plano-convex lens for photographing in a full 180° in all directions in front of the camera, creating a circular image having an increasing amount of distortion from the center to the periphery.
[ 1960-65 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012