Colour–magnitude diagram for unflagged objects with good photometry (uncertainties <0.1 mag in V and V − I) in a 0.9 deg² area around γ² Vel (from Jeffries et al. 2009). Objects with larger red symbols were observed in the GES. The lines shows theoretical 10 Myr PMS isochrones (from Siess et al. 2000; and Baraffe et al. 1998, using a colour–T_eff relation tuned to match the Pleiades) at an intrinsic distance modulus of 7.76, and with a reddening and extinction of E(V − I) = 0.055 and A_V = 0.131.