Chromatic aberration is an optical defect that occurs in a lens, causing different wavelengths or colors of light to be focused at different distances from the lens. This results in the appearance of color fringes or halos along the edges and around every point in the image.The phenomenon arises due to the fact that the refractive index of the lens material varies with the wavelength of light. As a consequence, the lens fails to focus all the colors of the visible spectrum onto a single plane, leading to the observed color fringing effect.Chromatic aberration can have a detrimental impact on the image quality, as it introduces unwanted color artifacts and reduces the overall sharpness and clarity of the image. Lens designers often employ various techniques, such as the use of specialized lens materials or the incorporation of additional lens elements, to minimize the effects of chromatic aberration and improve the overall optical performance.
