Definition: (1) Something that prevents light from being brought into sharp focus, disenabling the formation of a clear image. (2) Lens flaw - the inability of a lens to reproduce an accurate, focused, sharp image. Aberration in simple lenses is sub-categorized into seven types:
Definition: An optical defect in a lens causing it to form an image that is not sharp or that is distorted. See also astigmatism, barrel distortion, chromatic aberration, coma, field curvature, pincushion distortion, spherical aberration.
Definition: the inability of a lens to produce a perfect, sharp image, especially towards the edge of the lens field. These faults can be reduced by compound lens constructions, and the use of small apertures.
Definition: An optical defect in a lens causing it to form an image that is not sharp or that is distorted. See also astigmatism, barrel distortion, chromatic aberration, coma, field curvature, pincushion distortion, spherical aberration.
Definition: the inability of a lens to produce a perfect, sharp image, especially towards the edge of the lens field. These faults can be reduced by compound lens constructions, and the use of small apertures.
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