Security And Surveillance Systems
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Monitor the important parameters of the lens
- In order to make the megapixel camera the best performance, it would be important to use a high-quality megapixel lens, so the quality of the optical image is a key factor in the overall image quality. Megapixel lenses provide high contrast, sharpness and sharpness for the entire image. Rather than megapixel lens can not fully show the megapixel sensor high resolution, especially in the edge of the picture.s
My surveillance camera is not video in the evening, what is the matter?
- Your monitor should be infrared. If there is an image during the day, there is no image at night, it may be that the red light will be opened at night and the power supply will be larger than that of the day. But you don't have enough power. Maybe that's the reason.s
Buy surveillance cameras to see which targets
- Focal length (f) parameters: the focal length is the distance between the lens and the sensor. By changing the focal length of the lens, it can change the magnification of the lens and change the image size. When the object is far away from the lens, we can use the formula below: the zoom of the lens is approximately the focal length/object distance. Increase the focal length of the lens, enlarge the magnification, and bring the vision closer, the scope of the picture is small, the details of the vision can be seen more clearly. If you reduce the focal length of the lens, the magnification is reduced, the scope of the image expands, and you can see the larger scene.s
Monitor the problem I see other people in the monitoring of a video line 4 shots how do you do it?
- If you're using the video line, that's the same thing as closed-circuit TV. At the moment there is a new product called a-line, a line that can transmit a lot of camera signals, but it needs to be in the camera terminal and the machine room and equipments
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
Monitor the camera lens 1/3/1/4, and so what is the meaning of what relationship with the millimeter
- These units are inch is the size of the chip, 1/2 inch 1/3 larger than 1/4 large, the same size lens 1/2 1/3 according to the angle of 3.6 mm lens angle of 1 / 1/3 is more than 70 degrees then 1/4 inch is more than 60 ° 6 mm lens 1/2 inch angle of about 60 degrees 1/3 inch 50 ° about 1/4 inch 40 degrees ~!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
What cameras are commonly used in the field of security monitoring
- Goal in monitoring the indoor environment, tend to give priority to with small monitoring, which requires the focal length lens of relatively close configuration, or too much focus not only on visual clear no ascension, but also can cause for not on coke and the situation of the "weak". In general meeting room, office, in the monitoring environment of the elevator, the short distance fixed focus lens from 3mm to 12mm can satisfy the demand.s
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