The left-hand and centre panels show the distribution in scaled axis ratio a_sc and concentration c_e of sampled haloes, according to different selection criteria. The left-hand panel shows the distribution of a full halo sample of a single realisation (black dots) and the sample of the minima in a_sc from 1000 realisations (red dots). The centre panel shows the distribution of the haloes that give rise to the largest effective Einstein ring (encoded in the colourbar) based on 1000 realisations. The small arrows denote the indicated cut-offs identical to . The right-hand panel shows the distribution of the same maxima with respect to the scaled axis ratio and the alignment  | cosθ | , where θ is the angle between the major axis of each halo with respect to the line of sight.