Continuum luminosity measurements from SDSS spectra and miniJPAS photospectra. Triangles, squares, and stars indicate the continuum luminosity at λ = 5100, 3000, and 1350 Å, respectively. Blue and orange symbols display the results for sources with r <  20 and 20 <  r <  21, error bars denote 1σ-equivalent uncertainties, and the dashed line indicates a 1:1 relation between SES and SEP measurements.