Shooting Settings

The following functions are useful when set along with the basic settings.

Use Subject Detection

When selecting [Auto], [Animal], or [Birds] for [AF subject detection options] in the photo shooting menu, the camera gives priority to the faces of animals or birds during auto focus and displays focus point on the detected subject.

The [Birds] option is available in “C” firmware version 4.10 or later for Z 9 and 2.00 or later for Z 8.

Assign "Playback" to a Fn Button in Custom Setting f2 "Custom Controls (Shooting)"

Press the assigned button to playback pictures. Using this function in viewfinder photography allows you to immediately view the shots in the viewfinder by pressing the button with the right hand while holding the lens with the left hand.

Use Auto Capture

The [Auto capture] feature allows the camera to take photos automatically upon detecting a subject. By selecting the trigger criteria for auto capture, photographers create what is effectively an unmanned camera that can take photos automatically. This allows the photographer to capture the natural expressions of wildlife without having to be present at the shooting location. You can also leave one camera at a fixed location for auto capture while operating another camera by yourself to enjoy shooting the subjects while framing them in different angles and compositions.

Selecting [Auto capture] > [Start] in the photo shooting menu displays auto capture settings where you can select auto capture trigger criteria.
[Auto capture] is available in “C” firmware version 4.00 or later for Z 9 and 2.00 or later for Z 8.
For detailed settings for [Auto capture], see "Z 9 Professional Setting Guide Auto Capture Edition."

https://downloadcenter.nikonimglib.com/en/products/589/Z_9.html