来源：http://www.wfzhongtebao.com 点击次数： 发布时间：2019-05-23
Weifang Security Company joins us to teach you how to choose cameras一、 首先要看看感光材料
First, we need to look at photosensitive materials.
Photosensitive materials on the general market can be divided into two kinds: CCD (charge coupled) and CMOS (metal oxide). The former has the advantages of high image pixels, high clarity and high color recovery coefficient. It is often used in high-level digital cameras and digital cameras. The disadvantage of the former is that it costs more and consumes more power. The defect of the latter is just the same as that of the former. The price is relatively low and the power consumption is small. However, it is worse in imaging.
2. Pixel is also a key purpose
Nowadays, the mainstream products on the market usually have about 350,000 pixels, and some products with about 100,000 pixels were also produced earlier. Because of the relatively low technical content, the effect is not very good, it soon withdrew from the stage of history. At this time, some people may ask, is that the higher the pixel, the better? From a general point of view, yes. But on the other hand, that's not the case. For the same picture, the product with high pixels has a higher ability to analyze the image, so you need a lot of memory capacity.
3. Resolution is a problem that Weifang Security Company talks more about. I don't think I need to come here to talk about resolution. What we understand most is that:
A: What brand is your display? How high is the resolution and refresh rate?
B: Oh, good. I used 1024 * 768 for production and 1280 * 1024 for design. Playing games is usually 800*600.
But the resolution of the camera is not exactly the same as that of the display device. To be precise, the resolution of the camera is the ability of the camera to analyze images. Nowadays, the more CMOS on the market is 640*480, and some will be 800*600. But if it's a common CCD, it's higher.
Fourth, the camera, of course, should also compare the effect of the camera.
Video capture ability of the camera is the most concerned of the users. Now the capturing ability of the computer camera is accomplished by software, so the request of the computer is relatively high. Under normal conditions, 640*480 can reach 30 frames/S, but when the resolution is 320*240, the speed is slightly faster. Therefore, I can choose a suitable one according to my effect when I choose to buy.
V. Lens are a big problem
It is estimated that many users will ignore it when purchasing, but this is the most important part of the camera's light. The size of the aperture, the focus range of the lens, and so on. Ordinary according to the material points are mainly 3, there are glass lenses; plastic lenses and compounds, here the best is glass, his pass coefficient is large, ordinary good lens, his pass aperture will do larger, when the light is not very good, can also get good results, but the price is higher (a penny a penny a penny). The transparency of the plastic is almost the same, but the price is cheap, which has also been recognized by some middle and low-end users. There aren't many compounds on the market, so I won't give you a detailed introduction here.
VI. Other Data
Although today's applications are comparable, I am also comparable to find, but a brand-name product, his contents are in place, usually there will be photography, camera, impression file management, settings, some cameras with MIR function, then the software also needs audio settings.
Look at the interface, the camera used to use parallel ports, but with the progress of technology, gradually replaced by the USB interface, here Weifang Security Company must remind you a little, do not give up the USB interface products for a small profit. Eventually, they are about to quit the stage of history.
潍坊保安公司加盟教你选购摄像头，怎么样，看明白了吗，相信大家看到这里已经学会了怎么挑选摄像头，潍坊保安公司加盟哪家好？当然是找我们，Weifang Security Company joined us to teach you how to choose and buy cameras. How about you? Have you seen that? I believe you have learned how to choose cameras here. Which one is good for Weifang Security Company to join? Of course, I'm looking for us.