Achromatism

Pronunciation: /ˈeɪsieɪtʃˈɹoʊˈmætˈɪzəm/

Achromatism (noun)

  1. A problem in optics where different colours focus at different points, causing coloured edges in an image.
  2. The degree to which an optical system avoids colour separation, so colours appear together at the same focus.

Examples

  • The lens color error can blur colors at the edges.
  • This lens color error appears when light focuses unevenly.