SMFs of star-forming galaxies at z = 6. The dashed gray line denotes the true SMF from the SPHINX²⁰ simulation, while the solid coloured lines show the SMFs derived from the attSNE_Z (upper panel) and attSNE_Z_F410M (lower panel) models assuming the SMC dust law. Shaded regions mark Poisson uncertainties. The left panels use the posterior median, and the right panels use the minimum χ² posterior. Adding the F410M photometry yields a modest improvement in agreement with the true SMF when the median posterior is adopted, whereas the minimum χ² posterior produces a more accurate SMF, even without the extra band.