The cause of night vision blur of HD-CVI camera

The cause of night vision blur of HD-CVI camera
1. Some low-end lenses are used as high-definition lenses, resulting in unstable quality of the whole machine, low installation failure rate and low debugging efficiency.
2. At present, the lens within 30 yuan on the market is a non-confocal lens without night vision. It uses the so-called high-definition IR-CUT (the thickness of the inner glass piece is different) to compensate the lens out of focus and use it as an IR lens.

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