chromatic aberration
Noun 1. an optical aberration in which the image has colored fringes (hypernym) aberration, distortion, optical aberration | ||||
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Chromatic aberration Definition from Computer & Internet Dictionaries & Glossaries
| Digital Video (DV) & video edit terms / Eng2Eng v1.0 (web compilation) |
Chromatic aberration
Color shifts and color artifacts in an image caused by faults in a lens, or by the camera’s inability to register all three channels of color information. Single-chip video cameras are especially prone to chromatic abberation. Chrominance The saturation and hue of a video signal. Although slightly different in meaning, this term is often used interchangably with the term chroma to refer to color.
Color shifts and color artifacts in an image caused by faults in a lens, or by the camera’s inability to register all three channels of color information. Single-chip video cameras are especially prone to chromatic abberation. Chrominance The saturation and hue of a video signal. Although slightly different in meaning, this term is often used interchangably with the term chroma to refer to color.
| Steve's Digicams Digital Camera Dictionary |
Chromatic Aberration
Also known as the "purple fringe effect." It is common in two Megapixel and higher resolution digital cameras (especially those with long telephoto zoom lenses) when a dark area is surrounded by a highlight. Along the edge between dark and light you will see a line or two of purple or violet colored pixels that shouldn't be there.
Also known as the "purple fringe effect." It is common in two Megapixel and higher resolution digital cameras (especially those with long telephoto zoom lenses) when a dark area is surrounded by a highlight. Along the edge between dark and light you will see a line or two of purple or violet colored pixels that shouldn't be there.
Chromatic aberration Definition from Language, Idioms & Slang Dictionaries & Glossaries
| hEnglish - advanced version |
chromatic aberration
chromatic aberration
chromatic aberration. (opt.) see aberration, 4...
see also chromatic
chromatic aberration
chromatic aberration. (opt.) see aberration, 4...
see also chromatic
Chromatic aberration Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Chromatic aberration
In optics, chromatic aberration is caused by a lens having a different refractive index for different wavelengths of light (the dispersion of the lens). The term "purple fringing" is commonly used in photography, although not all purple fringing can be attributed to chromatic aberration.
Longitudinal and lateral chromatic aberration of a lens is seen as "fringes" of color around the image, because each color in the optical spectrum cannot be focused at a single common point on the optical axis.
Since the focal length f of a lens is dependent on the refractive index n, different wavelengths of light will be focused on different positions. Chromatic aberration can be both longitudinal, in that different wavelengths are focused at a different distance from the lens; and transverse or lateral, in that different wavelengths are focused at different positions in the focal plane (because the magnification of the lens also varies with wavelength).
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