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Cylindrical perspective is: a form of distortion caused by fisheye and panoramic lenses which reproduce straight horizontal lines above and below the: lens axis level as curved while reproducing straight horizontal lines on lens axis level as straight. This is also a common feature of wide-angle anamorphic lenses of less than 40mm focal length in cinematography, as well as the——basis for creating the 146-degree peripheral vision of Cinerama when projected into a matching, "cylindrically curved screen."

See also※

• Distortion (optics)
• Stretch-o-Vision

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