Family of templates b(k) (black lines) and r(k) (red lines) for the range of wave numbers k in the top axis; the left-hand y axis applies to the panels in the first column, the right-hand axis to the second column. The aperture scale θ_ap = 4.25∕(k f_K(z_d)) (bottom axis) crudely traces the projected b_2D(θ_ap) and r_2D(θ_ap) for lens galaxies at z_d = 0.3. Each panel varies only one template parameter. See text for more details.