Bar fraction for the Coma (red), Virgo (blue), and SMACS0723 (violet) clusters as a function of both the absolute r-band magnitude (left panels) and the stellar mass (right panels). The bar fractions have been computed using both only disc galaxies (ORDINARY, upper panels) and all galaxies (OVERALL, lower panels). The number of galaxies in each bin is shown at the top of each panel coloured accordingly. As explained in Sect. 4, bins are represented either every 0.5 mag or 0.25 dex, but the fraction (and therefore the number of galaxies) is averaged over bins of 1 mag and 0.5 dex for the magnitudes and masses, respectively.