Example of fit uncertainty when no NIR and MIR data are available and a big gap in wavelength exists between the rest-frame optical and FIR spectral domains. The two different tones of red shaded areas represent the 2.5%, 16% 84% and 97.5% percentiles of the models, as computed in the photometric bands of the input catalog; the corresponding M_⋆ range is as large as 0.25 dex (2.5th to 97.5th percentiles).