What the Meaning of WDR ?
Wide dynamic range is a feature in some network cameras that handles a wide range of lighting conditions in a scene. In a scene with extremely bright and dark areas or in backlight situations where a person is in front of a bright window, a typical camera would produce an image where objects in the dark areas would hardly be visible.
WDR solves this by applying various techniques to enable objects in both bright and dark areas to be visible.