What is WDR?

2026-04-10

WDR stands for Wide Dynamic Range. Simply put, wide dynamic range means that both the brightest and darkest parts of an image can be displayed clearly at the same time. Wide dynamic range refers to the ratio by which an image can distinguish between its brightest and darkest signal values.

Typically, in strong light, backlight, or other relatively low-light environments, images captured by cameras will appear either extremely bright or extremely dark. Bright areas are due to overexposure, and dark areas are due to underexposure. This severely affects the sharpness and quality of the video. This limitation is often referred to as "dynamic range."

Broadly speaking, "dynamic range" refers to the range of variation of an object, that is, the area between its lowest and highest values. It is usually described by the difference between the highest and lowest values. This is a very widely used concept. When discussing image specifications for camera products, "dynamic range" generally refers to the camera's ability to adapt to light reflections in a shooting scene, specifically the range of variation in brightness (contrast) and color temperature (color temperature).

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What is WDR?