What do you mean by automatic aperture, automatic focus and electric zoom of surveillance camera?

Optical zoom means that the camera adjusts the focal length through the movement of the lens in the lens, so as to obtain a better shooting field of view.

The larger the optical zoom factor, the better the telescopic effect (it can bring the distant scene closer).

You should be a novice, right? The most important parameters of the camera are: the size of CCD (the bigger the better), optical zoom factor, optical anti-shake, wide angle, face recognition, macro ability, video shooting effect and so on.

It can be enlarged and reduced without enlarging particles, so that the enlarged image can maintain its original fine quality. Intelligent zoom provides different degrees of enhanced zoom function according to the choice of different image sizes. Unlike digital zoom, intelligent zoom can maintain the same image quality as the original image. This function is very obvious when capturing the tiny details of statues or distant peaks. With the increase of magnification, the machine will automatically switch from optical zoom to high-definition intelligent zoom, which is completely continuous and imperceptible.