Apparent (observed) and absolute i-band magnitudes of galaxies in PAUS (solid lines; limited to 0.1 < z_phot < 0.8 and apparent i > 18) and GAMA (shading), with colours reflecting the (LEPHARE) red/blue selections displayed in Fig. 3 (top-left panel). We also display the magnitude distributions for 2 subsets of PAUS: (i) the best 50% selected on photo-z quality parameter Qz (dashed), and (ii) with apparent r < 19.8 (dotted) – approximately matching the GAMA flux-limit. Each histogram is individually normalised to unit area under the curve. Whilst the red galaxies in PAUS/GAMA are fairly similarly distributed in absolute i-band magnitude, PAUS exhibits a higher fraction of intrinsically faint blue galaxies. PAUS absolute magnitudes shown here are those computed using LEPHARE.