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The difference between a computer camera and a professional surveillance camera

Due to the difference in application design between the computer camera and the professional surveillance camera, some settings have to be made before the computer camera is used as a surveillance camera.
Shooting distance: The camera has a focus adjustment ring on the lens that can be used to focus at a specific distance. When using a computer camera for video chat, the focal length is generally 0.5 meters to 1 meter. When using a computer camera for home video surveillance, the distance between the camera and the shooting environment may reach 3 meters to 6 meters, so the focus should be re-adjusted.
Shooting pixels: The pixel value of the camera can reach 1.3 million to 3 million, but when used for video chat, due to network bandwidth limitation, the pixels used are set at about 300,000. Video surveillance, in order to capture the details, must use the highest possible shooting resolution. Of course, the higher the shooting resolution, the larger the storage space required. The general video surveillance monitoring range is less than 10 meters, and the resolution of 1.3 million pixels can meet the requirements.
Brightness, contrast: In order to capture clearly, in addition to accurate focus and appropriate pixels, the brightness and contrast adjustment of the camera is also very important. When using the camera, manually adjust the light source to lock the brightness, contrast, etc. of the shooting position. The indoor lighting environment is usually uneven, and the user should manually adjust the brightness according to the actual shooting environment.
Erection location: A good monitoring location will facilitate future monitoring. Home users can adopt a concealed erection method to hide a small computer camera above the living room TV cabinet or other higher position, so that better shooting can be achieved. Angle while avoiding being discovered.

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