Difference between the estimated and input shear values as a function of the input shear. The estimated shears are corrected using the zero-shear simulations to account for correlations across different shear setups, as described in the main text. Error bars represent the uncertainties in the weighted mean estimates, calculated by bootstrapping the 18 independent shear estimates for each input shear value. The black and red points distinguish between simulations with the two shear components having the same or opposite signs. The blue lines show the fitting results of Eq. (A.1), with the constrained parameter values presented in Table A.1.