V-band magnitude distribution of all objects in the OmegaWINGS and WINGS database. WINGS MD was re-normalised to match the total number of sources with 16 <V< 21 mag. The ratio of OmegaWINGS to WINGS MDs is shown as a dotted line; the corresponding scale is shown on the right-hand axis. The verticals are traced at the magnitude corresponding to a ratio of 0.5 and 0.8 (50% and 80% completeness level).