The biggest difference between an indoor camera and an ordinary camera is the difference in the use effect.

The biggest difference between an indoor camera and an ordinary camera is the difference in the use effect. In order to cope with security, indoor cameras need to be remotely controlled to monitor the target for a long time without interruption. At the beginning of the design, it was determined that its environmental adaptability was higher than that of ordinary cameras. The lens on the indoor camera is a semiconductor imaging device, so it has the advantages of high sensitivity, anti-glare, small distortion, small size, long life, and anti-vibration.

Lens debugging method

1. Install the lens:

The indoor camera must be equipped with a lens before it can be used. Generally, a suitable surveillance lens should be selected according to the actual situation of the application site, such as a fixed focus lens or a zoom lens, a manual iris lens or an automatic iris lens, a standard lens or a wide-angle lens or a telephoto lens Wait. In addition, pay attention to whether the interface between the lens and the digital camera is a C-type interface or a CS-type interface. The thread of the C-type interface and the CS-type interface lens are both 1 inch and 32 teeth, with a diameter of 1 inch. The difference is the distance between the lens and the CCD target surface. The distance is different. The distance from the reference surface to the focal point of the C-type mount is 17.562 mm, which is one more length than the CS-type from the CCD target surface. The distance from the focal point of the CS-type is 12.5 mm. Don't underestimate this connecting circle. Without it, the lens and the network surveillance camera will not be able to focus properly, and the image will become blurred. So before installing the lens, take a look at whether the camera and lens have the same interface method. If not, you need to increase or decrease the adapter ring according to the specific situation. Some cameras do not need to connect the ring, but use the rear image adjustment ring. When adjusting, use a screwdriver to loosen the screw on the adjustment ring and turn the adjustment ring. At this time, the CCD target surface will move backward (front) relative to the mounting base. The role of the ring. When installing the lens, first remove the protective cover of the indoor camera and lens, and then gently screw the lens into the lens interface of the camera and make it in place. For automatic iris lenses, the control line of the lens should also be connected to the automatic iris interface of the digital indoor camera. For the motorized two-variable lens or three-variable lens, as long as the lens is rotated in place, there is no need to correct its balance temporarily (only After the adjustment of the back focus is completed, the balance state needs to be finally calibrated).