Two ways of modeling the light distribution for extended objects during the deconvolution process. On the left is shown a single 360-s exposure of SDSS J1001+5027 obtained with the Mercator telescope in typical atmospheric conditions. The other panels show the parametric (top row) and pixelized light models (bottom row) for the lens galaxies as described in the text. The residual image for the single exposure is also shown in each case, as well as the average residuals over the 120 best exposures. The residual maps are normalized by the shot noise amplitude. The dark areas indicate excess flux in the data with respect to the model. Gray scales are linear.