Lumens are the standard unit of measurement for the total amount of visible light emitted by a light source. A standard candle produces about 12.57 lumens. The brightness of a candle is affected many factors, but the type of wax, the length and quality of the wick, and the burning temperature are the most important. By contract a candle lumen is very dim compared to modern-day light sources such as,LED light bulb: 800-2000 lumensFlashlight: 10-1000 lumensCar headlights: 1000-2000 lumens