Left panel: multiplicative bias after full METACALIBRATION as a function of m_AUTO for the baseline simulations (black for σ_w = 2 pixels; lightgrey for σ_w = 3 pixels) and the grid-based simulations (red points for σ_w = 2 pixels). Right panel: multiplicative bias after full METACALIBRATION as a function of the input half-light radius (r_eff) for galaxies with m_AUTO. Bottom panels: estimated selection bias from full METACALIBRATION (points). The solid lines show the corresponding direct measurements of the selection bias (cf. Figs. 4 and 5).