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Regarding technical downsides:

  1. The recommended camera here, and commonly elsewhere is the Dahua 5442, which is a 4MP camera using a 1/1.8" Sensor Size
  2. Second camera referenced is a Dahua 3549, which is a 5MP camera using 1/2.5" Sensor Size

The Dahua 3549 has a physically smaller image sensor than the Dahua 5442

When looking at the technical specifications of these two cameras, the Sensor Size is very meaningful because it provides us information to understand the pixel density of the image/video sensors and how much light is available for each pixel.

Generally, when assuming identical exposure settings (e.g. aperture/iris size, exposure time, gain), the camera with the lower pixel densi…

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