Azimuthally averaged radial surface-brightness profiles in the R-band (except for UGC 4599, which is B-band) for the galaxies discussed in this paper. The galaxy name, Hubble type, and disk-profile type are given in the upper right of each panel. Vertical arrows indicate R ₂₅, and dashed lines show exponential fits (a single fit for Type I, two for Type II and Type III profiles, and three fits for Type II+III), where the squares show the limits used for the fit (see Section 2.4); the sky uncertainty limit (see Section 2.3.2) is indicated by the horizontal dashed lines. Vertical dot-dashed lines indicate radii of prominent rings. For galaxies with bars, vertical dotted lines indicate lower and upper limits on the bar radius. Only outer bars are shown for double-barred galaxies.