Monitor the camera automatically zoom, electric zoom, manual zoom, zoom lens meaning and difference?
Manual zoom: Change the focus on the front-end camera by manually rotating the lens. This function usually appears in the bolt + manual zoom lens configuration, set once, do not change later, if you want to change the focal length, need to open the shield again, rotate the lens. This type of lens usually needs to adjust the focus ring after the zoom work is completed.
Electric zoom: Electric zoom usually refers to the camera through the console (such as hard disk recorders, matrix controller, cloud mirror controller) can make the camera zoom.
In the surveillance camera, there is generally no automatic zoom, but there is auto focus, such functions generally appear in the integrated camera, the decoder sends a zoom signal to the camera, the camera to zoom work, zoom work is completed, then the image Is blurred, you need to focus, a lot of integrated camera with auto focus function, to complete this focus work. There are some high-end camera (mainly high-speed ball) with a trajectory function, which is set in advance camera rotation and zoom information, after this camera has been set in accordance with the set of good track non-stop tour, which can see Do automatic zoom.
