Relationship between the residual $f_{\mathrm{residual},\hspace{0.5em}\mathrm{p}}=\frac{L_{\text{mock}}-L_{\text{model}}}{L_{\text{mock}}}$ from the GALFIT two-component fitting for face-on galaxies and the stellar halo fraction f_halo derived from kinematic decomposition. Galaxies with relative errors less and larger than 0.3 use solid and open symbols, respectively. The cases marked with black rectangles are galaxies with thick disk structures.