The operation steps are different for different models:

Cylinder machine focusing: need to open the cover on the cylinder machine, unscrew the lens cover, there is a small screw under the lens to adjust the focus. Note that there is (-z) behind the model to indicate a power zoom lens, and you can adjust the focus directly on the IE browser pan/tilt control button. It also supports the adjustment of the focal length by clicking the plus sign and minus sign in the main menu of the recorder, channel management, and pan/tilt control interface.

[If the camera is fixed focus, the focus cannot be adjusted. 】