Is there a camera in KTV? What are ordinary cameras like?

Generally speaking, no, of course, the suspicion of personal crime is not ruled out. Generally, the lights in KTV rooms are dim. If a camera is installed, it is usually infrared. If you are really worried, you can turn off all the lights and look at the whole room through the mobile phone camera. Infrared will have obvious light in the camera of mobile phone. If it is not infrared, you need to find it yourself.

The infrared camera needs to determine the camera type according to the specific use environment, especially the night environment, as follows:

1) Investigate the light source environment where the installation point is located at night: whether there is light or no light, whether the light is dim or no light, determines how low the infrared ray of the camera in the light source is, and the auxiliary camera will automatically turn on to monitor and achieve good image effect;

2) Determine the approximate range that needs to be seen clearly in the environment: When choosing an infrared camera, the approximate range of infrared light and camera lens has been determined, and the infrared lamp, camera lens and camera have been made into a set of finished products, so unlike ordinary cameras, it is not convenient to change the visual range by changing the lens.

Extended data:

Infrared camera:

The visible light that human eyes can see is red, orange, yellow, green, cyan, blue and purple according to the wavelength from long to short. Light with shorter wavelength than violet light is called ultraviolet light; Light with a longer wavelength than red light is called infrared, which is invisible to the naked eye.

Because digital cameras use CCD to sense all the light, the images taken are very different from those produced by our naked eyes only seeing visible light. In order to solve this problem, the digital camera is equipped with an infrared filter between the lens and the CCD, whose function is to let infrared light in a certain band pass through, absorb or reflect visible light and ultraviolet light.

At present, most infrared cameras use LED infrared light emitting diode as the main material of infrared cameras.

Reference: Baidu Encyclopedia-Infrared Camera