Left panel: residual multiplicative bias (top), additive bias (middle) and estimate for b^sm (bottom) as a function of observed magnitude, m_AUTO, determined by SEXTRACTOR. Right panel: idem, but as a function of the observed half-light radius, . The orange points indicate the biases when the polarisations are not corrected for PSF anisotropy, whereas the red points are for the standard KSB correction. The black points use b^sm to correct for PSF anistropy, resulting in vanishing additive bias by construction (and therefore not shown).