Ordinary people can also talk and communicate through video and sound on the network through the camera. In addition, people can also use it for various popular digital images, audio-visual processing and so on.
Commonly used lenses are generally 3.6 mm 6 mm 8 mm12 mm16 mm.
Angle is inversely proportional to distance. The greater the angle, the closer the distance.
Extended data:
Camera maintenance skills
1. Try to avoid pointing the camera directly at the sun to avoid damaging the image sensor of the camera.
2. Avoid contact with oil, steam, water, moisture, dust and other substances, and avoid direct contact with water.
3. Don't wipe the camera with rough detergent or organic solvent.
4. Do not pull or twist cables, including computer cameras and surveillance cameras.
5. If it is unnecessary, don't disassemble the camera at will, and try to touch the internal parts of the camera, which may easily cause damage to the camera. Once damaged, the dealer can't guarantee it.
6. During storage, the camera should be stored in a clean and dry place. Do not pull or twist the cable, similar operations may damage the camera.
Baidu encyclopedia-camera