Median effective area as function of demagnified integrated flux density for A2744 (red crosses), MACS J0416 (green squares), and MACS J1149 (blue diamonds). Median values are obtained combining all models for each cluster field. Error bars correspond to the 16th and 84th percentiles. For comparing uncertainty values, both axes cover the same interval in order of magnitude. Within the errors, both demagnified flux densities and effective areas span around 2.5 orders of magnitude.