Agos and you explain the CCD line number 420 lines, 480 lines, 500 lines, 520 lines, 600 lines, 650 lines, 700 lines, 720 lines. So many grades of CCD board line number, make people dizzy. After a lot of customer testing, ask questions, how about the same, no obvious difference. Yes, according to our usual method of detection, it is really not very different, but after the DVR and the support of high-definition high-definition display, the difference comes out.
I do not know when you buy surveillance cameras, have not noticed such a problem, that is, the camera price gap is more determined by the number of CCD machine board line. For a camera the same shape, if they use the CCD machine line number different, the price will have a world of difference, so that everyone in the purchase of surveillance cameras, in addition to look at the price, but also need to look at how the line board is CCD.
Many people don't understand the concept of the number of cameras, and even some people understand the number of CCD boards as camera pixels. In fact, CCD machine line number does not refer to the camera pixel, it refers to the horizontal resolution of CCD, the analog camera, the pixels are not representative of what, so you don't be misled by high pixel marketers. CCD line number is very important, its numerical value is greater, the higher the resolution, the quality is better, but for the average consumer, in order to measure the CCD plate line number is not easy, it requires specialized equipment to test.
In addition to the high resolution of the high speed CCD board machine, it is also more powerful in the image sharpness and color reduction than the low line number board machine. When we want to know the approximate number of surveillance cameras, we only need to print a few specialized test drawings and test them several meters away.
The current security market surveillance cameras, according to different grades, prices ranging from tens to thousands of yuan, in addition to some foreign brand price surveillance cameras in the thousands of dollars, most of the domestic surveillance cameras need only a few hundred dollars can buy. After careful comparison, it was found that the main factor determining the camera price was the number of CCD boards.
In order to better understand the relationship between the number of CCD boards and camera prices, we take a well-known brand camera in China as an example to make a comparison. Through the analysis of the single brand price, we found that the 420 and 480 line camera, the price gap of more than 40 yuan, while the 420 line and 650 line camera, the price gap reached 2 times, thus, we can see that the CCD board for the camera price influence.
Conclusion: different chip solutions out of the effect is not the same, but also the back-end equipment matching for different chip solutions of different manufacturers, different chip manufacturers produced the same scheme effect is not the same.
3142+405 420TVL economy, the effect is good during the day.
3142+633420TVL uses a lot of factories, and the infrared cameras are widely used. The illumination is very low, and it has completely replaced 405.
2163+405 480TVL (so-called "false high wire") cost-effective, low illumination, suitable for installing infrared machine, almost discontinued.
2163+409480TVL is not suitable for high intensity infrared machine, suitable for ordinary bolt hemisphere, almost stopped.
4103+405 480TVL (so-called "false high wire") cost-effective, low illumination, suitable for installing infrared machine, almost discontinued.
4103+409 480TVL (legendary 520TVL) high illumination, not suitable for infrared machines, the effect is generally almost discontinued.
4103+639 480TVL (legendary 540TVL) illumination is also possible, suitable for installing infrared machines. Almost discontinued.
3172+639 520TVL (Legend of 540TVL), suitable for infrared machines, a large number of.
3172+633 480TVL (Legend of the false high wire), suitable for infrared machines, a large number of.
2163+255 420TVL low line, low photo, use less, do not comment, almost stop production.
2163+529 480TVL high speed low light, with less, without comment, almost discontinued.
4140+673 700TVL high speed low illumination, with menu, newly introduced 2 years or so, high-end machines, a large number of use.
4140+633 480TVL high speed low illumination, with menu, new introduction about half a year, high-end machines, a large number of use.
2040+639 600TVL Korea DSP belt menu, new introduction, 1 years or so, a large number of use
2030+633 500TVL Korea DSP belt menu, new introduction, 1 years or so, a large number of use
COMS 1089 600TVL with IR-CUT effect first class, cheap, is selling well.