Distribution of absolute magnitudes and redshifts of our LRG lenses after the k-correction (top) and after the k-correction and luminosity evolution correction (bottom). The solid cyan line indicates the median. The green dashed boxes show the redshift and luminosity cuts on our lens sample; the magenta pentagons indicate the mean redshift and luminosity of those bins. The total density of LRGs as a function of redshift is shown by the black and red histograms on the horizontal axis for the LOWZ and CMASS galaxies, respectively.