Applied photometric redshifts (photo-zs) versus true simulation redshifts (z_obs) for all galaxies in the Mock1 region of the simulated lightcone between 2 < z_obs < 3. Galaxies that meet |Δz|< 0.15(1 + z_obs) are marked in green (Hildebrandt et al. 2012). The statistics for these galaxies are listed in the upper right hand corner (outlier fraction, scatter, and bias, respectively). Photo-zs are applied to all galaxies in our simulated lightcone based on the observed photo-z statistics in COSMOS2020 as a function of magnitude and redshift. The scatter in photo-zs creates difficulty in recovering companion systems (see Section 3.4.1).