Traditional Culture Encyclopedia - Photography and portraiture - What elements should be paid attention to when installing panoramic surveillance cameras?

What elements should be paid attention to when installing panoramic surveillance cameras?

The use of the camera is very simple, usually as long as the lens is installed correctly, the signal line is connected and the power supply is connected. However, in actual use, if the lens cannot be installed correctly and the state of the camera and lens cannot be adjusted, the expected use effect may not be achieved. Pay attention to whether the interface between the lens and the camera is C-type interface or CS-type interface (remember this, otherwise screwing the C-type lens directly into the CS-type interface camera may damage the CCD chip of the camera).

When installing the lens, first remove the protective cover of the camera and the lens, and then gently screw the lens into the lens interface of the camera to make it in place.

For the automatic aperture lens, the control line of the lens should also be connected to the automatic aperture interface of the camera. For the electric two-variable lens or three-variable lens, as long as the rotating lens is in place, there is no need to correct its balance state for the time being (only the balance state needs to be finally corrected after the back focus adjustment is completed).

Adjust the aperture and focus of the lens, close the electronic shutter and backlight compensation switch on the camera, aim the camera at the scene to be monitored, and adjust the aperture and focus ring of the lens to make the image on the monitor the best. If the camera is used in the situation where the illumination changes greatly, it is best to connect the automatic aperture lens and turn off the electronic shutter switch of the camera. If you choose manual aperture, you should turn on the electronic shutter switch of the camera. When the application site is brightest (the ambient light illumination is maximum), the aperture of the lens should be as large as possible, and the imaging is still the best (the image should not be too white and overloaded). Adjust the lens. Just install the protective cover and bracket.

In the above adjustment process, if you don't pay attention to opening the aperture of the lens as large as possible when the light is bright, but close it relatively small, the electronic shutter of the camera will automatically adjust at a low speed, so it can still be formed on the display.

Image; However, when the light is dark, the electronic shutter is already at the slowest speed (1/50s) due to the small aperture of the lens, and the imaging may be dark at this time.