Originally Posted by Viper2847
can someone explain what advanced CE does with a detailed explanation?
From my observations, ACE enhances the contrast by varying the brightness of the backlight, based on the over all brightness contained in the scene. As the scene gets darker, the backlight gets dimmer, making the blacks in a dark scene look even darker.
If you turn ACE off, the backlight stays constant as the scene gets darker, until a certain point and then the backlight drops suddenly to a low level. This is the auto dimming that people complain about, especially during credits and other dark scenes.
If you turn ACE on, the backlight starts dimming slowly as the scene gets darker, in a more smooth and continuous fashion, making the effect less noticeable. If the sudden drop in brightness bothers you when it is set to off, then the low setting is recommended to make the drop less sudden.
As far as I can tell, ACE only affects the backlight. It doesn't mess with picture processing in any way, like "black correcter" or "live color" or "adjusting contrast" etc.