Histograms of the photometric redshifts within a box of 200″ on a side around two different lens candidates (top and bottom row) as examples. Such histograms, one in the range up to a redshift of 4 (left) and one up to a redshift of 1 (right), were shown during the visual inspection to ease the environment classification. The lens system in the top row has an environment similar to the median, whereas the system in the bottom row shows an overdensity at z ~ 0.4.