Sources in the resolution-S/N plane that is used for recalibration of lensfit weights and shape estimates. Top row: estimates of the PSF leakage into the shape measurement variance, estimated with simple linear regression (left) and with clipped, iterative, residual-weighted linear regression (centre). Right: difference between the leakage estimates. Bottom row: PSF leakage estimates after correction of shape variances and weights (left). The estimates of PSF leakage into the source shape distributions is shown before (centre) and after (right) correction of estimated ellipticities.