Comparison of SEDs evaluated for the same object at z ∼ 1 using the full UV-to-IR observations (upper panel) and the LSST optical bands alone (bottom panel). The blue square represents the observed fluxes, and red dots represent the fluxes predicted by the model. The magenta lines delimit the division between optical and IR bands, which is taken into account by CIGALE. The IR emission is not constrained for the LSST estimate.