Photometric vs. spectroscopic redshifts for galaxies in the cluster field and in the magnitude range 18 ≤ R_C ≤ 24. Black dots represent spectroscopically confirmed members. The two horizontal lines indicate the z_phot range chosen for membership selection of the galaxies without z. Within this range only galaxies with chosen colors are selected as members. In this diagram these galaxies are indicated as red dots. Blue crosses are galaxies outside the spectroscopical and photometrical membership selections.