When the camera detects a face and does not detect the eyes, the detection frame will be displayed on the face.
The camera may detect the face instead of the eyes in the following situations:
- In low-light or back-lit conditions.
- When the eyes are closed.
- When the person is in the shade.
- When the person is out of focus.
- When the face is on the side-view.
- When the face size is too small.