Hikvision DeepinView IDS-2CD7A46G0/P-IZHSY 4MP Outdoor Network Bullet Camera with Night Vision & 8-32mm Lens - Manual (Page 5)

Installation & Configuration Guidance of DeepinView LPR Camera
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Example:
Too small Too large OK
(5) The angle between the vehicle-moving direction and the vertical direction
should be less than 30 °
Example: