Results from the galaxy model fits using the native HST/ACS and Euclid/VIS pixel scales, for a number of galaxies N_gal ≃ 10⁴, as described in Sect. 5.2 (test Ic). The fitted parameter S/N_fit (which is biased in the presence of correlated noise) is shown as a function of the input R_e for both the output galaxies D, E_uncorrected, and for the E_corrected images accounting for the noise correlation, for three values of the S/N. The data points are the average over the number of galaxies in each sample. The corresponding 1σ uncertainties are smaller than the size of the points.