EOS 5D Mark IV: Exposure compensation in Live View

The EOS 5D Mark IV features up to 5-stops of exposure compensation when shooting, to account for very bright or dark subjects. When you are shooting in Live View or Movie shooting mode though, you will find only 3-stops of range are possible. If you wish to access the full five stops of range, either exit Live View, or if you’re in Movie mode, switch to manual and manually set the exposure as required.
Camera settings
EOS 5D Mark IV