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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.s
The filters on the monitor are 650,850,940. What do they do respectively? What's the difference?
- 940 is invisible infrared light, infrared filter cooperate with infrared lights
Monitor the lens which manufacturers
- 1, Fujian Fuzhou, Xiamen, features: the most representative of the type of enterprises: Xiamen Li Ding, Fu Guang digital, Hongfa, Forset (the original industry boss)s
Surveillance camera MTV lens DC12V what is the meaning?
- DC12V: DC is DC, 12V refers to the rated voltage, DC12V refers to the rated voltage of DC 12V camera.s
Hurry. Surveillance camera lens focal length 2MM 4MM 6MM 12MM
- Have not seen a 2mm lens. Hemisphere, then generally 2.8mm, 3.6mm, 4mm, 6mm. Bolt 4mm, 6mm, 8mm, 12mm, 16mm. 4mm distance for about 15 meters, 6mm suitable for about 30 meters, 8mm about 40 meters, 12-16mm 50 meters -70 meters. 1/3 "sony chip.s
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.s
Hello, how about the camera lens
- Debugging of clarity, if you can't turn the camera to the control room, will be looked at, there is a person in the control room by radio or telephone command, the debugging is rotating lens, is very simple.s
Monitor the problem I see other people in the monitoring of a video line 4 shots how do you do it?
- If the camera is very large, the transmission cost is low in this way. The device under the lens should not be an anti-jamming electronic device. It should be a device for converting the signal.s
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