What is Chromatic Aberration

Chromatic aberration is a serious defect in lens imaging. It occurs when polychromatic light is the light source, and monochromatic light does not produce chromatic aberration.
 Chromatic aberration generally includes positional chromatic aberration and magnification chromatic aberration.
 The positional chromatic aberration causes the image to be observed with color spots or halos at any position, making the image blurry.
 And magnification chromatic aberration gives images with colored fringes.