Canon EOS 7D Mark II Advanced Owners Manual - Page 440

3 Setting Custom FunctionsN C.Fn3: Display/Operation Focusing Screen To suit your shooting needs, you can change to an optional focusing screen, sold separately. If you change the focusing screen, be sure to change this setting to match the focusing screen type. It is to obtain the correct exposure. Std.: Eh-A Standard screen provided with the camera. Precision Matte standard focusing screen. Eh-S: Eh-S Super Precision Matte focusing screen makes it easier to distinguish the focus point than with the standard Precision Matte Eh-A focusing screen. It is ideal for fast lenses having a maximum aperture of f/2.8 or larger. Geared for manual focusing. However, if the lens maximum aperture is smaller than f/2.8, the viewfinder will look darker than with the Eh-A focusing screen. The focusing screen setting will not be cleared even if you select [85: Clear all Custom Func. (C.Fn)]. To change the focusing screen, refer to the focusing screen's instruction manual. If the focusing screen does not come down with the holder, tilt the camera forward. 440