一、Select according to the actual needs of lens size.
The factor that directly affects the angle of view of an intelligent camera is the lens size. The lenses of smart cameras look similar, but they are actually different in size. The commonly used sizes are 2.8mm/3.6mm/4mm/6mm/8mm/12mm, etc. For most intelligent cameras, under the premise of fixed installation position, the larger the lens size, the farther the image can be shot, but the narrower the viewing angle. These are for fixed cameras.
If you want to make the smart camera see more widely, it is recommended to buy a smart camera with a PTZ.
The cloud platform can also be rotated in three ways:
1. The rotation angle of the camera needs to be controlled manually;
2. Automatic rotation;
3. Set positioning. The rotation mode of most PTZ in the market requires manual control, and the smoothness and positioning of rotation are very important. Xinhao electronic intelligent spherical camera has the rotation function, and the viewing angle can reach 360 degrees.
二、 Select according to the resolution requirements.

There is no doubt that the resolution determines the sharpness of the picture. The higher the resolution, the higher the sharpness of the camera. Just as you are nearsighted at 500 degrees and wear a pair of 250 degree glasses, it is obviously not feasible. When you walk, Zhang San and Li Si are silly and indistinguishable. If you change into a pair of 500 degree glasses, your vision will be bright. At present, the resolution of smart cameras on the market can be divided into the following three categories: 480P, 720P and 1080P.

Among them, the 480P resolution smart camera is cheap, but the resolution is low and looks blurry, which belongs to the low-end product of smart cameras. It is recommended that buyers not consider it. The Xinhao electronic camera has 1080P resolution, and the display effect is significantly improved.
As far as hardware is concerned, Xinhao Electronics uses HD optical lens, and can choose 1.3 million/2 million HD image quality to support PTZ. Xinhao Electronics has stronger video resolution capability than ordinary cameras, depending on the continuous efforts of the R&D team behind it. Horizontal 350 degrees, vertical 90 degrees, manual remote control rotation, digital zoom 22 times, double finger pinching can clearly see every detail, take photos and videos, so that users will not miss every wonderful life detail, support multi-user viewing, play video at any time, local storage, safe storage of video data.
三、Select according to the installation location.
Since ordinary surveillance cameras can be installed on the wall or ceiling, they are not limited indoors and outdoors, and are relatively flexible. Hemispherical surveillance cameras can only be installed on the ceiling, so they are mostly used indoors, and the installation height is limited. However, compared with the camera, there is no need for additional lens, protective cover and bracket. It is easy to install, beautiful and hidden, and the price is economical.