chromatic aberration
1
8.8
- noun
- /kroʊˈmætɪk ˌæbəˈreɪʃən/
- Specialized
:
aberración cromática
- It has to deal with chromatic aberration, geometric aberrations such as radial distortion and so on.
- residual chromatic aberration
- longitudinal chromatic aberration
- spherical chromatic aberration
Examples
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It has much better chromatic aberration correction, and its low-light performance is second to none.
Blog text (5) -
This lens' axial chromatic aberration is minimized, which renders a cool and smooth out-of-focus image.
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"Cat" lenses are remarkably free from chromatic aberrations and have very good resolving power.
Academic text (1994) -
I know we can't focus blue light because of the chromatic aberration, but is this also true for red?
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Any modern lens shouldn't show any noticeable chromatic aberration.
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Chromatic aberration occurs when a lens does not bend all wavelengths of light to the focal point.
Blog text (19) -
Check this though: the refractive index for blue light is enough different from red and green that when they are in focus, the blue is slightly out of focus (chromatic aberration).
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That means they cannot form as sharp an image as the M and L (medium and long) receptors no matter how low the chromatic aberration is.
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The lens of the vertebrate eye, so praised by the cretinists, does not correct for chromatic aberration (the fact that refraction separates the wavelengths).
Blog text (7) -
Photographers often struggle with chromatic aberration, which creates unwanted color fringes in their images.
Synonyms
3
8.4
A fault in a lens or mirror that makes images look wrong
A fault in a lens or mirror that makes images look unclear
Surface Forms
Morphology
The phrase literally combines 'chromatic' (pertaining to color) with 'aberration' (a deviation or defect), so the meaning as a color-related optical distortion is directly derivable from its parts. Although it is a technical optics term, its adjective+noun composition follows normal English patterns and would be understandable to a B1 learner who knows both constituents.
Etymology
Chromatic aberration comes from its literal parts: chromatic means 'color' and aberration means an 'error' in how a lens focuses. Because different colors bend by different amounts, they do not line up and this makes small 'colored edges' or a slight blur around bright parts of an image.