Hess diagram of the color-magnitude distribution of all objects in the VCNS catalog. The color indicates the number of objects in each bin with a size of 0.05 mag in J − H and 0.1 mag in J, using a square-root intensity scale. The thick solid line shows the ZAMS from Siess et al. (2000) at the distance of the Carina Nebula (2.3 kpc), while the thin line shows the 3 Myr (the typical mean age of the young stellar population in the Carina Nebula; see Getman et al. 2014) isochrone composed from the models of Baraffe et al. (1998) for the mass range 0.02 to 0.5 M_⊙, Siess et al. (2000) for the mass range 0.5 to 7 M_⊙, and Lejeune & Schaerer (2001) (model iso-c020-0650) for the mass range 7 to 70 M_⊙. The arrows indicate reddening vectors for A_V = 10 mag (assuming A_J = 0.271 A_V and A_H = 0.175 A_V; Draine 2011) starting at the location of 3 Myr old stars with masses of 1 M_⊙, and 0.1 M_⊙. The row of error bars in the left part of the plot shows the typical magnitude-dependent photometric uncertainties.