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Flat Field Correction For Lightroom - The Camera Forum®
From Photography Life: Longitudinal Chromatic Aberration Longitudinal Chromatic Aberration, also known as “LoCA” or “bokeh fringing”, occurs when different wavelengths of color do not converge at the same point after passing through a lens, as illustrated below: Lenses with Longitudinal Chromatic Aberration problems can show fringing around objects throughout the image, even in the center. …