On my sony 1080p, I have a RGB dynamic range option half way down the options under video which is below the usual screen and picture settings, (easy to overlook) if set on Auto or Limited it really darkens the game, set on Full its perfect and detailed in the dark areas, a total different picture. Have you got a similar option in screen or video settings. Also make sure your PS3 is also set to RGB Full and super white on, in the display settings.