Exposure compensation
to override the standard exposure set by the camera meter, and make an image brighter or darker, use exposure compensation. You can only use this in Program, Aperture Priority or Shutter Priority – it doesn’t work in Manual or any of the fully automatic modes. The scale you can see in the viewfinder, shooting menu and Quick Control screen only shows from -2/-3 to +2/+3 exposure compensation, but you can dial in up to 5-stops each way if you use the Expo.comp./aeb screen. In fact, if you activate the camera’s Auto Exposure Bracketing (AEB) function as well, you can set up to 8-stops of compensation.