Effect of interstellar extinction on the 500 pc sample. Top: skyplot of the 500 pc sample which is colour-coded according to the reddening parameters given by both Stilism and the SED fits. Bottom: G_bp − G_rp vs M_G diagram of the same sources where blue stars indicate non-composite hot subdwarfs that have been corrected for interstellar extinction using the E(44–55) SED estimates, and magenta stars indicating composite-colour hot subdwarfs that have been corrected for using Stilism. The correction shift is shown with the black dotted lines. Systems hosting subgiant companions have been excluded from the plot.