What is WDR
In many practical surveillance applications, the intensity of illumination with a scene can vary excessively. Images taken by standard cameras always seem to have an overexposed foreground or too dark a background due to the limitation of a camera sensors’ sensitivity. Over the course of a day, the situation can change with different areas of the scene being over or underexposed. What is required in this situation is a Wide Dynamic Range (WDR) camera.
WDR surveillance cameras can filter the intense back light surrounding a subject and thus enhances the ability to distinguish features and shapes on the subject.
The below screenshots provides a preview of how a non WDR image looks compared to an image with WDR enabled.