Cleverly waiting for the sale on the Aliexpress, I bought six more IP-surveillance cameras at a discount of $ 17. I'll tell you why it is such buy and what options there are cheaper and more expensive.
After buying on Aliexpress twelve different cameras, I settled on the dome camera on the sensor AZISHN SONY IMX323. I thoroughly telling them: ammo1.livejournal.com/1053037.html. Typically, these cameras are worth $ 24.69, after the sales price fell to $ 24.39 online, and $ 24.09 in the mobile app. I bought them even cheaper - for $ 21.29 or 1,400 rubles apiece.
In a review of the camera, some commentators have questioned the correctness of my choice, wrote that it is better to take the camera to the other processors, and other sensors.
First of all, you need to understand how the Chinese business of manufacturing CCTV cameras. On Aliexpress there are many brands of cameras. In fact, this assembly plants that do not produce electronics itself. They just take a ready-made blocks: the camera module (with sensor board), infrared curtain with electromagnetic actuator (IR-CUT), lens, lighting board, the POE fee (if the camera with POE), housing, with connectors Cable, gather it all together sell.
Typically, these manufacturers do not indicate the type of the camera module (and from it depends on the quality of the pictures and all the features). In their reviews, I always point out the module type and its characteristics. Of all that is sold on Aliexpress, the most frequent one manufacturer of the camera module and registrar fees: this XiongMaiTechHe also XM. At XM has a free cloud XMeye, which uses all the cameras and recorders, built on the modules of this manufacturer. With this cloud operating mobile applications XMeye and iCSEE (for Wi-Fi cameras). XMeye mobile app is more or less convenient.
Much less common camera modules from other manufacturers. They work with other cloud services - Danale, Yoosee. However, these cameras can work with registrars on the boards XM and in this case, a picture with them, you can look at the Registrar through the same XMeye.
Now for the sensors. The cameras that I chose, using 2.19-megapixel sensors SONY IMX323. They provide an excellent picture FullHD day and more or less acceptable at night.
The cheaper cameras FullHD placed modules with sensors SC2235. I review these cameras: IP-camera FullHD 1000 rubles. What's the catch? (Ammo1.livejournal.com/1024009.html), Video surveillance of 1,800 rubles (ammo1.livejournal.com/1045699.html). It's funny that XM in the characteristics of this sensor module name shamefully ignores and says simply "2.0M 1 / 2.9" CMOS sensor ". Based on my experience, this sensor has a native resolution no higher than 720p, but in many cases, such image quality is sufficient. Application modules instead of the modules on the SC2235 SONY IMX323 camera reduces the price by about $ 5.
The more expensive FullHD-chambers used SONY IMX291 sensors. Due to the higher sensitivity of the camera to the IMX291 it gives a much better picture at night (day difference may not be noticeable at all). Using the module with the camera sensor increases the price of almost $ 10. I decided for myself that I IMX323 and the quality is sufficient.
The module is not only a sensor, but also the processor. The economy FullHD-chambers used processors HiSilicon Hi3516EV100. This processor delivers 20 frames per second at a resolution FullHD and 25 fps at 720p. The more expensive cameras use Hi3516CV300, it differs in that enables 25 fps in the FullHD and firmware module may be videonalitika (sending the recording signal or alarm when crossing line, the perimeter violation, failure in said subject place). Application module with this processor increases the cost of the camera for $ 3-5. I quite enough, and V100 with its 20 fps, and the lack of intelligence.
Of course, the price of the camera affects the body. Cheapest - plastic "dome". Sealable metal street "dome" and "bullets" increase the price of the camera for $ 5-7. I'm on buildings not spare - where the camera is standing on the street, and so the choice is obvious, but in the house or apartment, I also use the camera in metal housing (to me so calmly). As for the choice of the form, it seems to me, "dome" is almost always more convenient to "bullets" (and adjust more easily and knock down such a chamber is more difficult, and icicle on it will not grow in the winter).
Everything I wrote above applies to cameras 2MP FullHD. The sale is the lower chamber 720p and 960p resolutions and higher - 3MP, 4MP, 5MP. With the price of a good camera FullHD less than 1500 rubles it seems to me on the camera of a lower resolution, and not worth watching. 3MP camera is almost always cheating - on those cameras that I bought, written 3MP, but in fact there FullHD.
4MP and 5MP resolution is necessary only in order to be able to do something to increase and to consider using the digital zoom. I bought for fun 5-megapixel camera on the sensor Asecam SONY IMX178 (now it It costs $ 35.96), But it did not impress me: yes, higher resolution, but all motions are lubricated (probably the processor does not have time to handle this amount of data).
In general, I stopped at the metal dome sealed chambers FullHD on SONY IMX323 sensor and processor Hi3516EV100. Perhaps you can find them and other manufacturers and assemblers, but I have been working for five such cameras Azishn and I decided that since with them everything is fine and they are cheap, then you should not look for something else.
I'll tell you how I bought them at a discount today.
On the sales page, I took the coupon "$ 5 with the purchase of $ 50", and in the annex to the coupons exchanged coin "$ 10 with the purchase of $ 67" and "$ 2 with the purchase of $ 10." The first coupon used for the purchase of two cameras (still and lock the electrical cabinet "on dobivku" up to $ 50), a coupon for the purchase of three cameras and the last to buy a camera.
As a result, three cameras cost me $ 62.27 ($ 20.76 each), two at $ 43.38 ($ 21.69 each) and one at $ 22.09. The average price of a single camera with the purchase of six units will receive $ 21.29 (in Rubles got 1400 rubles). With their quality and possibilities in my opinion an excellent price.
P.S. Forgive me again about the surveillance. Just for me it is now the most urgent topic - build and run the four systems themselves and their relatives.
© 2019 Alex Nadozhin