Comparison between the MuSCADeT and that galfit separations. The original colour image of MACS J1149+2223 is shown on the left, followed by the galfit subtraction of the galaxy members and the subtraction using MuSCADeT. The colour cuts are exactly the same in all three images. The red ellipse in the middle panel indicates an area where the galfit fit leads to under-subtraction of a galaxy halo.