In optics, chromatic aberration (CA, also called achromatism or chromatic distortion) is a type of distortion in which there is a failure of a lens to focus all colors to the same convergence point. It occurs because lenses have different refractive indices for different wavelengths of light (the dispersion of the lens). The refractive index decre...
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http://en.wikipedia.org/wiki/Chromatic_aberration
(from the article `photoreception`) ...macula lutea is found in higher primates (simians) and possibly chameleon lizards. This pigment filters out the shorter wavelengths of light and ... The last aberration, chromatic aberration, is the failure of a lens to focus all colours in the same plane. Because the refractive index is least at ....
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http://www.britannica.com/eb/a-z/c/80
when the different wavelengths of light passing through a lens focus at different points. This effect arises from the fact that different wavelengths of light experience different refractive indexes when passing through a material.
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http://www.chemistry-dictionary.com/definition/chromatic+aberration.php
A defect in a lens in which the various colors of the spectrum are not brought to the same focus. Blue light, for example, is refracted (bends) more than red light when it passes through a lens and hence comes to a focus inside that of red light. The result is fringing – the formation of a col...
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http://www.daviddarling.info/encyclopedia/C/chromatic_aberration.html
a focus defect in which electrons of different velocities focus at different axial distances
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=531-42-19
A defect present in all single lenses because different wavelengths of light come to a focus at different distances from the lens. This defect will show up as a false colour fringe around a star for example. The defect is corrected by using multiple lens arrangements using different types of glass.
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When using white light through a lens system, it is inevitable that different wave lengths (colours) are brought to a focus at slightly different points. As a consequence, there are chromatic aberations in the image, good microscope objectives are therefore corrected for this at two wave lengths (achromats) or at three wave lengths (apochromats), a...
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An optical defect of a lens which causes different colours or wave lengths of light to be focused at different distances from the lens. It is seen as colour fringes or halos along edges and around every point in the image
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http://www.encyclo.co.uk/local/21048
When using white light through a lens system, it is inevitable that different wave-lengths (colours) are brought to a focus at slightly different points. As a consequence, there are chromatic aberrations in the image; good microscope objectives are therefore corrected for this at two wave-lengths (achromats) or at three wave-lengths (apochromats), as well as for spherical aberration.
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This is the phenomenon of rainbow colours surrounding a view seen through a telescope. It is most noticeable when the object being viewed is in sharp contrast to its surroundings. Chromatic aberration is caused by the fact that light of differing colour is brought to a focus at slightly differing distances from the lens. Achromatic and apochro...
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http://www.irpoyser.co.uk/glossary.php
Type: Term Definitions: 1. the difference in focus or magnification of an image arising because of a difference in the refraction of different wavelengths composing white light. Synonyms: chromatism2, color aberration, newtonian aberration
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http://www.medilexicon.com/medicaldictionary.php?t=84
Chromatic aberration is the presence of prismatic colours at the edges of an optical image due to the refractive index of the lens material being different for light of different frequencies.
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http://www.probertencyclopaedia.com/browse/GC.HTM
A lens aberration producing an overall blurred image; the inability of a lens to bring all wavelengths of light (especially red and blue) into the same plane of focus; usually present in regular large-aperture telephoto and super-telephoto lenses; does not improve by stopping down the lens; correctable through the use of low Dispersion (ED, LD SD) ...
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http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
[
n] - an optical aberration in which the image has colored fringes
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http://www.webdictionary.co.uk/definition.php?query=chromatic%20aberration
The inability of a lens to focus different colours on the same focal plane. Appearing as a 'colour fringe' around objects, especially at the edges of the photograph.
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https://www.encyclo.co.uk/local/20176
A defect in lenses that causes different colors (wavelengths) of light to have different focal lengths. See also: Aberration.
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https://www.encyclo.co.uk/local/20687
noun an optical aberration in which the image has colored fringes
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https://www.encyclo.co.uk/local/20974
Also known as purple fringing. It is fairly common in 2MP digital cameras and above, especially if they have long telephoto lenses. You can see it when a dark area is surrounded by a highlight. In between the dark and light, you may see a band of purple pixels that shouldn't be there. There are ways of removing this which I have covered in the Ph.....
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https://www.encyclo.co.uk/local/22122
the variation of either the focal length or the magnification of a lens system with different wavelengths of light, characterized by prismatic coloring at the edges of the optical image and color distortion within it. Also called
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https://www.infoplease.com/dictionary/chromatic-aberration
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