a lens of small focal length, having a highly curved protruding front element, that covers an angle of view of almost 180°. It yields a circular image having considerable linear distortion
WordReference Random House Unabridged Dictionary of American English © 2025
fish′eye lens′, [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
Collins Concise English Dictionary © HarperCollins Publishers::
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