1. It depends on the pixel resolution of the camera. Generally speaking, the level of a camera is divided according to the level of pixel resolution.Tracking camera ，The higher the camera image sensor and pixel index, the better the camera.

2. In order to make full use of the pixels of the image sensor, it is also very important for the camera to be equipped with a high-quality optical lens. Therefore, the focal length and aperture of the camera lens are very important, so be sure to choose the parameters of the camera.

3. In addition to the above two points, we need to refer to one point when selecting cameras, and that is the still image shooting capability of cameras.