What Is Chromatic Aberration?
Chromatic aberration is an optical phenomenon where a lens fails to focus all colors of light to the same convergence point. Because light is composed of different wavelengths, each color travels through a lens at a slightly different speed and refracts at a different angle. This results in "color fringing" or halos, typically purple, green, or blue, appearing around the edges of high-contrast objects and making the overall image appear softer or less focused than it should be.
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