Brightness, Contrast, Gamma - In Game

Path of Exile's a great game, but for whatever reason it tends to be brighter than any other game I've got on my system. Monitor and system were calibrated (or rather, adjusted if you'd prefer since technically it's not calibration) and other games look perfect.

Path of Exile, however looks bright, resulting in contrasts not being as strong as they should for a game of this aesthetic (or at least my expectation.)

Can we please get controls for Brightness, Contrast, and Gamma in game? I can settle for Brightness, but having all three would help people achieve the perfect balance.