Number of lenses as a function of absolute magnitude a) and redshift b) for the three lens samples, obtained by applying identical cuts to the CFHTLS W1 photometric redshift catalogue from the CFHTLenS collaboration (Hildebrandt et al. 2012). The “all” sample (black solid lines) has the broadest distributions, and covers absolute r′-band magnitudes between −18 and −24, and redshifts between 0 and 0.6. The luminosities of the “blue” sample (blue dotted lines) are in the range −24 < M_r < −20, with redshifts 0.15 < z < 0.6. The “red” sample (purple dot-dashed lines) has the narrowest distributions, with luminosities −24 < M_r < −22 and redshifts 0.3 < z < 0.6.