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FAQ
- What is the number of millimeters that monitor the camera?
- Surveillance cameras generally see the 3.6 6 8 12 16MM These lenses are generally divided into wide-angle, ordinary, long focal length (these are fixed focus)
- About installation monitoring, how to monitor the number of meters according to the range and distance?
- Third, single-lens monitoring is simple, and more get a lens can be improved, and now 2IT's hard drive also has a large capacity of the hard disk for large-capacity information to create the conditions.
- What is F1.2 F on the camera lens? What is the parameter, 1.2 and what are the parameters
- The illumination of the image is proportional to the square of the relative aperture of the lens, which is generally used to represent the size of the lens aperture in terms of F = F/D, the inverse of the relative light diameter. The smaller F is, the larger the aperture, the greater the light flux to the CCD chip. So in the case of the same focal length f, the smaller f is, the better the camera is.
- The monitoring camera has 3.6 mm and 3.2 mm. What is the difference?
- See range is different, 3.6 MM to look wide a few
- How do I choose to monitor the camera? Lens and CCD
- CCD commonly used 1 / 3CCD and 1 / 4CCD, this refers to the size of the sensor chip, CCD size generally choose a good good. For example, professional cameras use 1/2 inch. General cameras are 1 / 3sony
- Hurry. Surveillance camera lens focal length 2MM 4MM 6MM 12MM
- When the focal length calculation, if there is no corresponding focal length of the lens is normal, then you can choose according to the product catalog similar models, the general choice is smaller than the calculated value, so the perspective will be larger. The above information provided by the Guangzhou Qianan Electronics Co., Ltd., I provide monitoring cameras and the corresponding accessories.
- How does the camera lens's focal length choose?
- 4, in the city for security monitoring camera lens, due to monitoring the distance and the environment is different from the basic configuration of 10mm to 120mm or so long-range zoom lens can be.
- Monitor the difference between the lens of the millimeter
- These are the parameters of the lens we often hear. This parameter determines the range and distance of the camera, the smaller the value, the wider the range to be captured, the shorter the distance; the greater the value, the smaller the range, the longer the distance.
