Gray areas in the upper panels are the regions A, and B of the NGC 2298 CMD adopted to select all the (single and binary) cluster stars (left) and the candidate binaries with q > 0.5 (right), in a range of 3 m_F814W magnitudes. In all panels, the MSRL is represented as a green continuous line, while the green dashed line is blue shifted from the MSRL by three times the color error. The red continuous line is the locus of MS-MS binaries with mass ratio q = 0.5, while the red dotted line is the locus of MS-MS binaries whose components have equal mass. The red dashed dotted line is displaced to the red from the dotted line by 3 times the color error. Lower panels show the observed CMD of NGC 2298 (left), the artificial stars CMD (middle), and the CMD of field stars (right).