Comparison of the proximity effect at redshift z = 3 of a) the RAM (triangles and dotted line), b) the semi-analytical model (circles and dash dotted line), and c) the results from the radiative transfer simulation (squares and dashed line). The solid line shows the BDO reference analytical model. The dashed vertical line marks the start of the unreliability region of log ω ≥ 2.4 for the faint QSO and log ω ≥ 3.4 for the bright QSO. Results are shown for a QSO sitting in a filament. The left panel is for the low luminosity source, and the right one for the high luminous one. We show only the 2σ errors in the mean.