Completeness curves for stochastic clusters with ages log(τ)[yr] = [7, 7.5,8, 8.5, 9, 9.5] and masses of log(M) [M_⊙]  =  [3,4,5]  for the four galaxies. All clusters have an input FWHM = 2.7 pixels. Red lines represent the number of detections without applying any size criteria (right column). Blue lines are the number of detections after applying the size criteria of FWHM_ishape ≥ 0.2 pixels, used in Mora et al. (2007, 2009) (middle column). Black lines are the number of detections after applying the size criteria used in this work (FWHM_ishape ≥ 0.7 pixels) (left column). The legend is in units of solar masses (M_⊙). The symbols over the lines represent an age step (i.e. 0.5 dex) starting from the left.