CCTV Technician Jleeb Al Shuyoukh 51050078 | White halo when night vision switches on

If you are managing a site in Jleeb Al Shuyoukh and notice a stationary white halo appearing near the edge of your image when the camera enters night mode, you are likely looking for the cause before considering hardware replacement. This phenomenon can be frustrating, but identifying the source of the light reflection is a logical first step for any CCTV technician in Jleeb Al Shuyoukh.

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Investigating Night Vision Artifacts

Begin by observing the camera feed closely as it transitions into night mode. Record whether the white halo appears instantly or gradually and note if the artifact remains stationary in a still scene, which helps distinguish between internal processing issues and external environmental interference.
Carefully inspect the immediate surroundings within the infrared light path for any protruding walls, ledges, or nearby surfaces. Compare the physical location of these objects with the position of the halo on your screen, though please note that this visual correlation alone cannot definitively establish the root cause of the light reflection.
Examine the camera dome for any smudges or debris and verify if there is any strong opposing light source nearby. You should perform these physical checks before attempting to adjust the infrared intensity settings on any specific camera model that supports such configurations.

Verifying System Performance

Once you have completed your assessment, review a saved night-time video clip to ensure that the glare is significantly reduced. You must verify that the camera still retains the necessary scene detail required for your specific security needs before concluding your evaluation of the system performance.

Frequently asked questions

Can environmental debris on the lens affect night vision quality?

Axis documentation indicates that water droplets and dust particles can reflect infrared light directly at the camera dome. This often creates localized glare or spots that obscure the image, requiring a gentle cleaning of the exterior lens cover to restore clarity.

Is it possible to adjust the infrared output on my camera?

Yes, certain camera models allow for adjustable infrared output levels. The effectiveness of these adjustments depends heavily on the specific installation environment, as reducing intensity can sometimes mitigate glare while potentially impacting the overall illumination range of the scene.

Could external light sources be causing the halo effect?

Axis notes that external light sources, including illumination from a neighboring camera, can cause unwanted reflections. These light sources may interfere with the infrared sensors, leading to halos or washed-out areas that appear only when the night mode is active.

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