Nikon Z 5 Reference Manual page 115

D
Animal Detection AF
•
Animal eye-detection is not available in movie mode.
•
Animal face- and eye-detection may not perform as expected if:
- the subject's face occupies a very large or very small proportion of the
frame,
- the subject's face is lit too brightly or too poorly,
- the subject's face or eyes are obscured by fur or other objects,
- the subject's eyes are similar in color to the rest of their face, or
- the subject moves excessively during shooting.
•
Depending on shooting conditions, the camera may fail to detect the
faces or eyes of some breeds when [Animal detection] is enabled.
Alternatively, the camera may display a border around subjects that are
not the faces or eyes of dogs or cats.
•
The light from the AF-assist illuminator may adversely affect the eyes of
some animals; we recommend that you select [Off] for Custom Setting
a12 [Built-in AF-assist illuminator].
Focus
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