Comparison of photometric redshift distributions for two KiDS DR3 samples: FIDUCIAL (see §3.1 for details), and FIDUCIAL with an additional cut of r < 23.5, for BPZ (bars) and ANNz2 (lines). The comparison suggests that for r > 23.5 the ANNz2 photo-zs in DR3 may not be trustworthy as they are based on extrapolation. The shape of the BPZ dN/dz is driven by the prior that was adopted (see text for details).