The LF at z = 7, obtained using different distributions for the simulated half light radii, namely the uniform one (template 7, cyan points), and the three log-normal distributions (template 8 using dark pink points, template 9 using dark green points, and template 10 using purple points). The dark green bins are shifted by +0.1 mag, while the dark pink points are moved by −0.1 mag, respectively, for clarity. The blue dotted lines indicate the range of variability for the best fit of α spanning the range −2.15 ≤ α ≤ −1.38. The blue dashed and green dot-dashed lines show the LF at z = 6 of McLure et al. (2009) and Bouwens et al. (2007), respectively. The filled black squares are the LF presented in Oesch et al. (2010a).