Lux is a unit of measurement that quantifies the intensity of light falling on a surface. One lux is roughly equivalent to the light emitted by a single candle illuminating one square metre of space. In practical terms, 1 lux is approximately equal to 0.0929 foot-candles, or 10.764 lux equals 1 foot-candle.
Understanding lux is important for photographers, videographers, and lighting professionals who need to evaluate and control illumination levels. Measuring light in lux allows for accurate exposure settings, proper lighting design, and consistent results in both studio and outdoor photography.