Mass density profile analysis for the different type of lenses. From top to bottom: galaxies (red shades), QSOs (blue shades), WEN clusters (gold shades) and ZOU clusters (magenta shades). Left panels: npix = 400 and σ = 2.4 arcsec case. Right panels: npix = 2000 and σ = 0.3 arcsec case. The best fit of the four profiles is shown with the black lines: Burkert, dashed line; Sérsic, dash-dotted line; NFW, solid line; and SIS, dotted line. The vertical dotted gray lines represent the range within which the points have been considered for the fitting.