Lenovo H430 User Manual page 27

The default setting has been pre-selected. You can adjust the viewing distance
according to your needs.
Notes:
1. Ensure the lens of the camera is exposed and not covered.
2. Ensure your eyes are exposed and not covered.
(The function that detects the distance between the user and monitor
is based on the position of the user's eyes. Therefore, if the eyes are
covered or there is a strong reflection, the distance detection may be
affected.)
Wear glasses may affect the accuracy of the face image verification.
3. The limitation of the distance detection by the camera:
The minimum distance: about 20 centimters (7.90 inches)
The maximum distance: about 70 centimeters (27.55 inches)
The pitch angle (the face rotary angle scope in the vertical):
Elevation angle: 20 degrees
Depression angle: 30 degrees
The horizontal rotary angle (the face rotary angle scope in the
horizontal): -20 ~ +20 degrees
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User Guide