Can I monitor the camera?
Can ah now a lot of surveillance cameras have zoom function Samsung Dahua Hai Kang and other cameras
Can be some of the price of a little high point of the camera can be basically called the one machine. Install the cable when you need to pull a set of control lines, so you can control the control of the lens where the focal length. Want to adopt
Monitor the camera can focus on it? Otherwise, when you buy the camera, there are "distance" to buy. However, the general camera does not have auto focus function. The focal length is the manual "fixed" focal length. High-end and dedicated camera with auto focus, manual zoom function.
