R₀ surface brightness profiles of NGC 3585 (top) and NGC 5812 (bottom). Top panels: the circles show the extinction corrected R magnitudes per square arcsec, calculated from the R flux as measured by the ellipse task. The solid curves are the double beta model fits. The residuals to the fits are shown in the bottom panels. Note that in both galaxies the fits are excellent (Δmag < 0.1) at almost all radii. Data points and residuals are only shown for R > 4″ and R > 3″ for NGC 3585 and NGC 5812, respectively, due to the limitations of the ellipse models in the central regions.