Comparison between galfitm single-band (SM) fits versus galfitm multiband (MM) fits, plotted in a similar manner to Fig. 9. We show the recovered Sérsic model parameters as a function of the r-band apparent magnitude as cosmologically scaled from the MM fit to the lowest redshift artificial image for each galaxy. Columns show results for u, g, r, i, z bands, respectively. Upper panels: difference in magnitude; middle panels: ratio of effective radii; lower panels: ratio of Sérsic indices. Values of m^[M] − m^{[M, all]} > 0, |$r_{\rm e}^{[{\rm M}]}/r_{\rm e}^{[{\rm M},{\rm all}]} > 1$| and n^[M]/n^{[M, all]} > 0, indicate that the magnitude is fainter, effective radius larger and Sérsic index greater, respectively, when measured in the single-band image compared to that obtained using the multiband approach. The solid lines indicate the median, while dashed lines are the 16th- and 84th-percentiles of the distribution, all determined within one magnitude bins. Only parameters for the artificially redshifted images are included in this figure. The grey points indicate that at least one fit (SM or MM) ended in close proximity to a constraint, and for which the recovered parameters are hence deemed to be unreliable.