Full version of Fig. 10, showing the joint posterior distribution of a subset of lens mass parameters, for the 3 main model families tested in this work. The first one includes only external shear in addition of the three main deflectors, the second one replaces external shear with the El Gordo cluster deflection field, and the last one includes a combination of the two. Dashed lines indicate the mean position (over the six filters), position angles and axis ratios of the deflectors light, to compare with the values inferred from lensing.