Nikon Z8 User Manual page 582

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.
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Focus Shift Shooting