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What kind of outdoor security camera can see faces for 20 meters?
- According to the original poster said now can't see nothing more than the acquisition card resolution is not enough and the lens is with wide Angle lens (in order to monitor the larger area), if you don't change transport also use the acquisition card 20 meters to see face it will be more than 12 mm lens, if for more than 12 mm lens can cause monitoring area, don't know so that I can make your satisfactions
The monitoring camera has 3.6 mm and 3.2 mm. What is the difference?
- It refers specifically to the size of the lens, which can be distinguished by the depth of the field and the size of the image. The smaller the lens is, the smaller the image is, and the larger the image is, the larger the scope is. This is something that you have to think about before you install the camera, the size of the object, the object spacing, the size of the lens, the size of the CCD, the size of the CCD.s
What is the meaning of F1.0 f1.1.2 F1.4 in the camera? What's the difference? Detail point
- F stands for aperture, the smaller F value, the larger the aperture, the larger the incoming light, the clearer the light will be.s
Monitor the lens which manufacturers
- Video surveillance system developed a short period of twenty years, from the 19's 80's analog monitoring to hot digital monitoring and then to the Internet video surveillance, has undergone enormous changes. In the IP technology gradually unified global Ts
About installation monitoring, how to monitor the number of meters according to the range and distance?
- It's easy to get rid of the corner. Opposite to install a probe basically no dead ends. Followed by monitoring the lens depends on the site light is better, otherwise the image is not clear nor useful.s
What is the difference between the zoom lens, the automatic aperture and the manual aperture?
- Or adjust it to manual adjustment. Like human eyes, the automatic aperture is when you look at the sun, your eyes squint and your eyes open wide at night.s
5 meters away with the number of mm monitor camera lens appropriate?
- If you need to look very wide and wide can also consider 2.8MM wide-angle lens. But the individual camera does not have this specification.s
The above position is to use the 6mm to monitor the camera lens or the 8mm lens is suitable
- With 6 mm wide, this distance, with 6 mm is suitable for, 420 line and 480 line is a little difference, 480 is clear, but the definition and the relationship between the host, the largest and protective cover, is better, nanjing ZhiYu technology to do a lot of casess
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