Confidence areas of the scale parameter f and amplitude parameter g (left panel) and the confidence areas of the halo mass M_h and halo concentration c jointly derived from the constraints on the f and g parameters (right panel) for an analysis of the mock KiDS+GAMA area. Orange contours show the maximum likelihood fit on the stacked tangential shear profiles, and the blue contours the maximum likelihood fit as it was performed on the ellipticities of sources used directly, using all the galaxies in the mock field simultaneously. Shown are the best-fitting values for each method (orange and blue crosses) and the fiducial lens model (red circle). The contours correspond to the case with 50 lenses per deg² in the simulated field.