Huawei P9 Lite - Manual (Page 112)

Camera and Gallery
105
Pro camera settings
When you switch to Pro camera mode, you can adjust a whole range of camera settings
in the viewfinder to produce professional-looking shots. For example, you can adjust the
ISO, exposure compensation, white balance, focus mode, shutter speed, and more.
Low
exposure
icon
Touch this icon to restore the default exposure settings. This icon will only
appear when the exposure is too low.
Manual settings