Spectroscopic redshifts are compared with the ephor_ab photometric redshifts in the upper panel. The red-sequence galaxies are shown by red symbols, while star-forming galaxies are shown by blue symbols. The solid, dashed, and dotted line shows the difference of the two redshifts by |$\pm 0.0$|⁠, |$\pm 0.05$|⁠, and |$\pm 0.1$|⁠. In the lower panels, the difference between photometric and spectroscopic redshifts is shown as a function of the |$r-z$| color of galaxies. The histograms on the right-hand side show the distribution of the redshift difference in red-sequence (red) and star-forming (blue) galaxies. The dots and bars are the median and dispersion of the redshift difference. (Color online)