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Longitudinal Chromatic Aberration (LCA)

A type of chromatic aberration where different wavelengths focus at different points along the horizontal optical axis as a result of dispersion properties of the glass. The refractive index of a glass is wavelength dependent, so it has a slightly different effect on where each wavelength of light focuses, resulting in separate focal points for red, yellow, and blue light along a horizontal plane.

See also Transverse Chromatic Aberration (TCA) , Aberration , Chromatic Focal Shift , Lateral Color

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