Video Camera Surveillance
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What kind of outdoor security camera can see faces for 20 meters?
- In addition, there is also a network hd camera, which enables you to monitor more areas while ensuring clarity. But with that you can't use your original equipment, and you need to run the other line.s
Monitor video of the lens classification? These scenes are used in what the environment
- Monitor the lens has 2mm, 3.6mm, 4mm, 6mm, 8mm, 12mm, 16mm, 25mm .... that focal length, the greater the number of focal lengths, see farther, but the perspective is relatively small, such as 2mm surveillance near Monitoring the area near the relatively large, 25mm to see the distance is far, but look at the near not.s
20 meters away with the number of mm monitor camera lens appropriate
- 1/4 "CCD lens in the line of sight with 1/3" CCD no difference, but the angle will be more narrow, while the shooting of the object will appear taller.s
How to install the monitor, and the choice of the lens!
- 1, because the two points from the door are more than 10 meters, can not directly see the door, and see what is the use of the door? So the No. 1 installation point should be removed.s
How does the camera lens's focal length choose?
- 1, under normal circumstances, the general conference room, office, elevator monitoring environment, 3mm to 12mm or so short-range focus lens to meet the demand.s
What is the focal length of the camera lens in the elevator
- The elevator lens is generally used in wide-angle lens, and the commonly used wide-angle lens is 2.8 mm and 3.6 mms
How do I choose to monitor the camera? Lens and CCD
- 3, the network camera usually uses CMOS sensors
Monitor the camera focal length 3.6mm 4mm 6mm. What is the meaning
- Large number of millimeters of the lens is equivalent to the local zoom, according to the needs of the venue, the size of the number of millimeters of the lens price is the same, there is a picture below you look to understand, hope to adopts
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