 The most common type of floodlight is the metal-halide lamp, which emits a bright white light (typically 75–100 lumens/Watt).Sodium-vapor lamps are also commonly used for sporting events, as they have a very high lumen to watt ratio (typically 80–140 lumens/Watt), making them a cost-effective choice when certain lux levels must be provided.LED floodlights are bright enough to be used for illumination purposes on large sport fields.