chromatic aberration
Sign in to savefailure of a lens to focus all colors on the same point
In the Vinony graph
Vinony's link graph records 608 inbound references to chromatic aberration, and connects out to optical aberration, achromatic lens and digital single-lens reflex camera.
Vinony files it under Geometrical optics and Image defects.
Vinony links it to 44 Wikipedia language editions.
Wikidata facts
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- Encyclopædia Britannica 11th edition
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- Chromatic aberration
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- Chromatic aberration
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Encyclopedic overview
Focal length of lens varies with the color of light Photographic example showing a high quality lens (top) compared to a lower quality one exhibiting transverse chromatic aberration (seen as a blur and a rainbow edge in areas of contrast) In optics, chromatic aberration (CA), also called chromatic distortion, color aberration, color fringing, or purple fringing, is a failure of a lens to focus all colors to the same point. It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light. The refractive index of most transparent materials decreases with increasing wavelength. Since the focal length of a lens depends on the refractive index, this variation in refractive index affects focusing. Since the focal length of the lens varies with the color of the light, different colors of light are brought to focus at different distances from the lens or with different levels of magnification. Chromatic aberration manifests itself as "fringes" of color along boundaries that separate dark and bright parts of the image.
Types
Excerpted from Wikipedia’s “chromatic aberration” article, available under the CC BY-SA 4.0 licence.