Selection limits of CALIFA: absolute magnitudes M_r,p are plotted against linear isophotal sizes of galaxies in the CALIFA MS (black points), compared to the same for galaxies in SDSS (orange). The two vertical dashed lines delineate the range of galaxies accessible to CALIFA; all galaxies within this range would be selected by CALIFA if located at a suitable redshift. The horizontal lines represent the limits inside which for a certain luminosity bin the fraction of SDSS galaxies within the CALIFA “accessible range” is above 95%.