Why night video looks bad
Most cameras switch to night mode when it gets dark. They light the scene with small infrared lights next to the lens, and show a black and white picture. Many night problems come from that light bouncing back into the camera or not reaching far enough.
Common causes you can check
- Glare: if the camera sits close behind a window, the infrared light bounces off the glass and washes out the picture. The camera should be outside the glass or the light switched as the maker advises.
- Insects, spider webs or dust on the lens or cover. Wipe the lens gently with a clean soft cloth when the camera is not touching live wires.
- A wall, tree leaves or a light very close to the camera reflects the infrared light back.
- A bright lamp or headlights facing the camera make everything else look dark. Turn the camera or the lamp.
When it is not a simple fix
If the picture is grainy even in a clean, well-placed camera, the camera may be old or low quality, or the power supply may be weak and giving too little power for the infrared lights. A technician can test the power and the cable. For a dark yard, an extra light or a camera with a stronger night view can help. Don't open the camera or the power box yourself if it is outside and wet, and always switch off the power before anyone touches wiring.