Sony a7SIII Help Manual page 121

3.
Point the camera at the face of a human, and press the key to which you have assigned the [Eye AF] function.
To shoot a still image, press the shutter button while pressing the key.
To focus on the eyes of an animal
Set [ Face/Eye Subject] to [Animal] before shooting. If the detection target is an animal, eyes can be detected only
when shooting still images. Animal faces are not detected.
Note
The [Eye AF] function may not function very well in the following situations:
When the person is wearing sunglasses.
When the front hair covers the person's eyes.
In low-light or back-lit conditions.
When the eyes are closed.
When the subject is in the shade.
When the subject is out of focus.
When the subject is moving too much
There are also other situations in which it may not be possible to focus on the eyes.
When the camera cannot focus on human eyes, it will detect and focus on the face instead. The camera cannot focus on eyes
when no human faces are detected.
The camera may not detect faces at all or may accidentally detect other objects as faces in some conditions.
Related Topic
Face/Eye Prior. in AF (still image/movie)
Face/Eye Subject (still image/movie)
Right/Left Eye Select (still image/movie)
Selecting the focus method (Focus Mode)
Selecting the focus area (Focus Area)
5-021-326-11(1) Copyright 2020 Sony Corporation
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