How to install 1 million HD webcams

When installing the lens, first remove the protective cover of the high-definition surveillance camera and lens, and then gently screw the lens into the lens interface of the camera to make it in place. To manually stop the aperture, 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. Because the aperture is large and the depth of field is relatively small, focusing should take care of the clarity of the whole monitoring site as much as possible. When the field illumination decreases, the electronic shutter will automatically slow down, and the larger aperture can still meet the imaging requirements. In the process of adjustment, if the aperture of the lens is not as large as possible when the light is bright, but as small as possible, the electronic shutter of the camera will automatically adjust at a low speed, so a better image can still be formed on the display; 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. Second, the adjusted back focal length is also called back focal length, which means that when a standard lens (standard C/CS interface lens) is installed, the image of the subject can be formed on the target surface of the CCD image sensor. Generally, the back focal length of high-definition surveillance cameras has been adjusted at the factory. Therefore, in the application of matching fixed-focus lens, it is generally not necessary to adjust the back focus of the camera. (1) Install the lens on the camera correctly. (2) Open the aperture of the lens as large as possible (the purpose is to reduce the depth of field to accurately find the imaging focus). (3) Push the lens to the Tele state through the ZoomIn, and take a close-up of an object other than 10m, and then adjust the focal length to make the close-up image clear. (4) Carry out zoom adjustment (ZoomOut) opposite to the previous step to pull the lens back to the wide-angle state. At this time, the picture becomes a panoramic image containing the above-mentioned close-up object, but at this time, focus adjustment can no longer be carried out (note: focus adjustment cannot be carried out at this time when the image becomes blurred), but the next post-focus adjustment is prepared. (5) Loosen the hexagon socket head screw used to fix the rear focus adjustment ring at the front of the HD surveillance camera, rotate the rear focus adjustment ring (for cameras without the rear focus adjustment ring, directly rotate the lens to drive the built-in rear focus ring) until the picture is the clearest, and then temporarily tighten the hexagon socket head screw. (6) Push the lens to the telescopic state again to see if the close-up object just shot is still clear. If it is not clear, repeat the above steps A, B and C..(7) Generally, it only takes one or two rounds to complete the back focus adjustment. (8) Tighten the hexagon socket head screw and adjust the aperture to a proper position. Try to install one million high-definition network cameras according to the above method, and then you can debug it to see if the picture meets the requirements. If there is a problem, you can check it according to the above method to see if there are any mistakes, or consult a professional surveillance camera technician for a detailed solution.