Fitted M_★ and its offset from the true value for fits to the attenuated stellar continuum, with metallicity treated as a free parameter and three dust models applied: SMC (left), Calzetti (middle), and Salim (right). Considerable offsets in M_★ persist even when the normalised true SFH is used, driven mainly by slope mismatches between the true normalised attenuation curve and the assumed model curve. Parametric and non-parametric SFH models yield comparable results. Across all four SFH models, the SMC law yields the closest agreement in M_★, whereas the Calzetti law produces the largest offset.