« Back to Glossary Index
WDR solves a common surveillance problem: a camera pointing at a building entrance can see either the bright outside or the darker interior – not both clearly at once. WDR cameras take multiple exposures at different settings and combine them into one image, showing detail across the full range.
WDR capability is rated in decibels – higher means a wider contrast range handled correctly. Super WDR processes three or more frames rather than two, improving performance in the most extreme lighting conditions.
- Typical use cases – building entrances, ATM vestibules, parking garage exits, reception areas with windows behind the subject
- Rating scale – 80 dB is entry-level; 120 dB is standard; 140 dB (Super WDR Pro) is the top tier for extreme scenes
- Super WDR vs standard WDR – standard WDR blends two exposures; Super WDR Pro blends three with multiple exposures per frame
- HLC (High Light Compensation) – a related feature that specifically handles headlights and spotlights without blowing out the surrounding image