Nikon Z 8 Reference Manual page 508

Tip: Aperture
Given that pictures shot at very small apertures (high f-numbers) may lack definition, we recommend
that you choose apertures wider (f-numbers lower) than f/8–f/11.
Tip: Close-ups
Because focus depth is reduced at short focus distances, we recommend choosing smaller focus steps
and increasing the number of shots when photographing subjects close to the camera.
508
Focus Shift Shooting