Surface brightness image and profile of the galaxy CIG 340 (IC 2487). Left panel: r-band image. The scale of the colours represents the surface brightness of the image, and the scale is shown in the profile panel (right) following the y-axis scale. Middle panel: same image with the mask applied and the elliptical apertures of the dynamic position angle and ellipticity profile. Right panels: surface brightness profile (top), position angle (middle), and ellipticity (bottom) with respect to the radial distance in arcseconds (bottom) and kiloparsec (top). The red and green curves show the fit with dynamic and fixed elliptical apertures, respectively. The blue curve represents the fit with rectangular apertures. The position of the disc break (if any) is shown with the dashed elliptical aperture and the vertical dashed line in the middle and right panels, respectively. The dotted line in the right panel represents the radius at 25 mag arcsec⁻². The figures for the whole sample of galaxies are given in Appendix B.