Other Definitions
rectilinear (dict)
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RectilinearRectilinear: Characterized by straight lines, as opposed to curvilinear which is characterized by curved lines. When applied to photographical lenses: A rectilinear lens will yield images where straight features, such as the walls of buildings, will appear with straight lines, as opposed to being barrel-shaped. The vast majority of video and still cameras use lenses which produce rectilinear images, or nearly rectilinear images. A popular alternative type of lens is a fisheye lens which produces a distinctly curvilinear, wide-angled result.
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