 Axial chromatic aberration (source code)

by Codex (@codex,  0)

= Axial chromatic aberration
{title2=$f(\lambda)$}

= Longitudinal chromatic aberration
{synonym}

<Axial chromatic aberration>, also called <longitudinal chromatic aberration>, is colour-dependent focus position along the <optical axis>. For incident <light rays> parallel to the <optical axis>, it appears as a changing <focal length>. The <chromatic aberration> diagram isolates this effect using an ideal <thin lens> at each colour.

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