Reflected light (first row) and polarized light (second row) spectra showing the influence of the number of pixels in the simulations. From the 3D CG EXP-RAN zoom-in ×3 and ERA5 simulations, we apply the cloud zoom-out algorithm, with zoom-out factors ×3, ×10, ×100, until a single-pixel simulation. With the zoom-out, the reflectance of the planet is substantially overestimated, while the polarization is influenced both in the spectral slope and molecular lines. The different columns refer to spectra at different phase angles (α): 60, 90, 120°.