Q:5 meters away with the number of mm monitor camera lens appropriate?

Lens 8mm for stairwell; lens 6mm field angle 50 ° irradiation distance of 5-8 meters; lens 8mm viewing angle of 39.5 ° irradiation distance of 8-15 meters; lens 12mm viewing angle of 26.2 ° irradiation distance of 15-18 meters; lens 16mm angle 19.8 ° irradiation distance of 23-25 meters; according to this, the election is the best. If you want to see a little clear, you can choose this basis on the election of a little larger.

Q:The surveillance camera has a lot of waves

You have a long distance between this point and a break point. If a line has such a ripple, you can add an active anti-jammer on both ends of the video. There's a lot of this on the X treasure. It works.

Q:What is F1.2 F on the camera lens? What is the parameter, 1.2 and what are the parameters

This is the aperture of the aperture, in the camera device, F or F stands for the aperture, and the larger the number is the smaller the diameter of the aperture

Q:What is zoom in the surveillance camera

This concept of the camera is a principle, the object is small, the scope is relatively large, the distance also follows. The opposite is true. Camera is the most critical equipment, video surveillance systems (indicators) of its quality fit and unfit quality directly affect the camera machine, therefore, whether the camera and the choice of appropriate both to system quality, and is related to the project cost.

Q:What is the difference between the 2.4mm, 4mm and 6mm camera lens?

The 4MM is best to look at the area of about 4 meters, and so on. The approximate distance is like this

Q:Monitor the camera on the tw is what the meaning of how to set up

On the contrary, the direction of the more twisted to the twist, the longer the focal length of the lens, you can see a smaller range, but things accounted for even greater.

Q:Hurry. Surveillance camera lens focal length 2MM 4MM 6MM 12MM

When the focal length calculation, if there is no corresponding focal length of the lens is normal, then you can choose according to the product catalog similar models, the general choice is smaller than the calculated value, so the perspective will be larger. The above information provided by the Guangzhou Qianan Electronics Co., Ltd., I provide monitoring cameras and the corresponding accessories.

Q:How does the camera lens's focal length choose?

3, the general intersection monitoring, because the shooting space is larger, higher clarity requirements, so for 6mm to 60mm in the distance from the focal length lens.

Q:What does the ministry of public security (MPS) refer to the video surveillance of A lens, type B lens, and c-type lens?

The principle of the division of lens division. Class B lens is refers to the unit is in general, place the key parts of the plan are the video camera, such as public channel, related units and places the public areas, and other important parts and area; The main entrance, small and medium entertainment venues, small and medium-sized guests (brigades) and the main entrance and exit of the Internet service business premises; General public transport stations, key parts of small and medium-sized parking lots, buses and taxis; Other public areas of government investment and construction.

Q:What is the difference between the zoom lens, the automatic aperture and the manual aperture?

Auto aperture manual aperture, that is, the aperture can be adjusted by the camera itself.