[Auto Lighting Optimizer] cannot be set (EOS 7D Mark II)
Giải pháp
If [ 
: Highlight tone priority] is set to [Enable] on your camera, [Auto Lighting Optimizer] is automatically canceled.
: Highlight tone priority] is set to [Enable] on your camera, [Auto Lighting Optimizer] is automatically canceled. If you wish to enable [Auto Lighting Optimizer], set [ : Highlight tone priority] to [Disable] first, and then set [ 
: Auto Lighting Optimizer] to [Enable].
: Highlight tone priority] to [Disable] first, and then set [ : Auto Lighting Optimizer] to [Enable].For details on how to change the shooting menu settings and how to set [Auto Lighting Optimizer], please see the instruction manual supplied with the camera.