Right panel c): the derived (K_s,J − K_s) CMD of all stars measured in the BUL-SC29 field, including both bulge and disk contributions. Black dots refer to stars with errors smaller than the selection applied in panels a) and b) (see text for more details), with green points referring to stars whose errors exceed such limits. Black crosses show stars from 2MASS, which are saturated in the HAWK-I images.