Image comparison between recalibration and the DDF-Pipeline. Left column: Images recalibrated with the method from this paper (see Section 2.2). Right column: Same images, produced with the DDF-Pipeline at the same color scale. The first row shows Abell 399, the second row shows Abell 401, and the last row shows the radio galaxy 2MASX J02581043+1351519 with its extended diffuse emission tail. The square-root scaled color bar extends from 0 to 25σ on average (average σ from both maps).