The wide dynamic function is a feature that allows the camera to see the image under a very strong contrast.
Wide dynamic cameras are dozens of times more than traditional surveillance cameras with a 3 : 1 dynamic range. Natural light is arranged from 120,000 Lux to 0.00035 Lux in starlit night . When the surveillance camera looks out of the window from the interior, the indoor illumination is 100 Lux , and the illumination of the outside scenery may be 10,000 Lux , the contrast is 10,000 / 100 = 100 : 1 . This comparison can be easily seen by the human eye, because the human eye can process a contrast ratio of 1000 : 1 , but the traditional closed-circuit surveillance camera will have a great deal of problems. The traditional surveillance camera only has a 3 : 1 contrast performance, which You can choose to use the electronic shutter of 1/60 second to get the correct exposure of indoor targets, but the outdoor image will be cleared (fully white); or you can use another method to monitor the camera to select 1/6000 second to obtain the perfect exposure of the outdoor image, but The image in the room is cleared (all black). This is a defect that has been around for a long time since the camera was invented. The wide dynamic camera can handle this kind of problem very well. The wide dynamic camera is also called super wide dynamic camera. At present, there are several ultra wide dynamic technologies that can implement this wide dynamic function.