I dont know about anyone else but my PS4 seems to dim at times. I will be playing a game than the screen will become dimmer and look less lighted. I found out if you turn on a light in the room than the screen will turn bright again. Anyone else know of this issue or this a standard thing that was supposed to be like this to help your eyes.
Mod Edit: Moved from PS General to PS3 Support. - Sassyknot
My thoughts are that the light sensor on the PS4 changes according to the light in the room.