IR Ghosting and Seal Issues: Effects of Under/Over Tightening Dome Covers

Under-tightening or over-tightening the dome on the camera can cause IR ghosting and seal issues which can lead to water or debris penetrating the dome. IR ghosting happens when the light from the IR lights is reflected off the dome and back into the lens of the camera. This will often result in the night time image having small dots of light or blurry spots or areas in the image. Since this has to do with the IR lights, the issue is not always apparent in the daytime image. If there are other light sources present in the area, it is also possible that light is filtering in through a gap and reflecting off the dome into the lens of the camera.