The camera lens is the eye of the camera and is an indispensable part of obtaining high-definition images. The coordination of the surveillance camera and the lens is reasonable, which will directly affect the overall effect of the entire monitoring system. Taking into account the importance of the lens, if we want the camera to perform its most pleasing imaging, we must fully understand the type of lens before use, including the application of the lens, and we must understand the characteristics of the lens with the application features, only to fully grasp the lens The characteristics and applications can fully utilize the most favorable imaging effect of the lens.
Currently the classification of domestic surveillance cameras, the lens can be roughly divided into fixed aperture lens, manual iris lens, manual iris zoom lens, auto iris lens, auto iris lens, auto iris zoom lens, board lens, fisheye panoramic lens, power zoom Ten shots and kong shots. The main difference between the lenses is the use of the lens and the application environment. Therefore, how to use the lens to achieve the most effective imaging effect in practical applications has become a major factor for the engineering company.
Surveillance Camera Lens Common Failures:
1, the camera and lens interface does not match
The mismatch between the camera and the lens interface directly affects the distance from the second set of points of the lens to the camera chip, so the actual lens focal length is not the nominal focal length, which will cause the lens to fail to focus.
2, camera and lens imaging size does not match
We know that only when the imaging size of the lens is larger than the movement size, normal imaging can be performed, but the viewing angle of the lens will be smaller than the nominal angle of view; if the imaging size of the lens is smaller than the size of the camera chip, a hidden corner will appear around the monitoring screen.
3, camera and lens aperture work drive mode or voltage does not match
Automatic iris lenses are generally divided into two kinds of video drive and DC drive, and their operating voltage is not exactly the same, the voltage mismatch and drive mismatch will cause the lens aperture can not be opened normally, naturally will not be able to image. Here to remind everyone, in the use of automatic iris lens, first of all should be on the camera's aperture converter hit the nominal drive side of the lens, while ensuring that the camera's output voltage is within the operating voltage of the aperture.
4, the connection problem, wrong connection or loose interface
There will be various connections between the surveillance camera and the lens and the display. When there is a connection between the camera and the controller, the middle connection will be more. If the connection is not careful enough, there will be either If the connector is not properly connected and loose, the system may not work properly. Therefore, when the construction personnel is required to install, be sure to read the installation instructions carefully to avoid such occurrences.
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