Relative difference between shear profiles with and without magnification. The redshifts for the lenses are z_d = 0.41 in the upper panels and z_d = 0.62 in the lower panels; the source redshift is kept fixed at z_s = 0.99. The limiting magnitude of the lenses is 22 mag in the r-band, and for the sources it is 23 and 25 mag for α_s = 1.75 and 0.58, respectively. The red “downward” triangles indicate shear profiles that only have magnification in the lens galaxy population, while the orange “upward” triangles show the influence of magnification for source galaxies only. It can be seen that a local slope > 1 of lens or source population leads to an enhanced signal, whereas α_d, s <  1 causes a reduced signal. The green crosses display a measurement closest to real observations, i.e. where magnification affects both source and lens galaxy populations. A reduction or enhancement depends on both slopes α_d, s, as well as the redshifts of lenses and sources z_d, s. In all cases, the shape of the shear profile changes.