Security Camera Surveillance
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What is the difference between the 2.4mm, 4mm and 6mm camera lens?
- The smaller the number, the bigger the picture, the smaller the image. Use distance due to different actual site adjustment.s
Hurry. Surveillance camera lens focal length 2MM 4MM 6MM 12MM
- 3.6mm 70 degrees 10 meters 4mm 65-68 degrees 10 meters about 6mm 55 degrees 20 meters about 8mm 45-50 degrees 30 meters 12mm 38 degrees 40 meters 16mm30 degrees 50 meters 25mm 21 degrees 60 meterss
What is the meaning of monitoring the camera mm
- Just a few mm words of the camera, usually refers to the lens of the focal length of the optical parameters.s
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 apertures
5 meters away with the number of mm monitor camera lens appropriate?
- Monitor the camera lens 3.6mm (4mm) viewing angle of 69.9 °, identify the face is 3 meters to 5 meters.s
About installation monitoring, how to monitor the number of meters according to the range and distance?
- Surveillance camera has a network camera gun and analog camera gun. Network camera gun than the analog camera to a little clear, according to the following recommendations to choose the lens can be. Simulated camera gun can be slightly larger distance, about 2%.s
Monitor knowledge! How much Angle camera is best for the 1.2m x 20 m?
- According to my experience, the first lens with 6mm, the second with 3.6 or 4mm lens is better.s
16MM lens can see how far
- If it is 135 frame, it is basically to the limit of 8mm (fish eyes), if it is DC, that 16MM is generally equivalent to about 64MM. In fact, as long as a normal lens can be in the infinity focus, that is to say , Infinite location can be achieved - such as a lens in the 64MM focal length can also focus on the sun, that distance far enough?s
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