What does WDR mean?

WDR (Wide Dynamic Range) refers the ability of the camera to handle very wide light ranges. It is usually exhibited when people are in front of a large window where it is a very bright outside. If you want to see both the person's features as well as the very bright scene behind them, you need a camera that provides WDR. WDR is usually provided by taking multiple pictures at different gain settings and then averaging the result into one composite picture.