Negative ions are of fundamental interest for the understanding of electron correlation and also play an important role in domains such as astrophysics and atmospheric physics. Until recently, the photodetachment of the ground state of the carbon anion C− (4S) suffered from long-standing discrepancies between the results of different calculations as well as between theory and experiment. New theoretical and experimental results were reported in, which are in very good mutual agreement, as well as a new description of the resonant process occurring for photon energies around 6 eV. Following on from of our previous work, we report here the results obtained for photodetachment of the excited state (2D) of C−, in particular over the photon energy range from 0.5 to 2.5 eV where the disagreement between existing calculations are particularly pronounced.