This Portable Digital Lux Meter with PC Interface can measure up to 200,000 lux. It is used for checking the level of luminance, the measure of the amount of light falling on a given surface. It applied in the fields of cinematography and scenic design, in order to determine the optimum light level for a scene, where they can help to reduce the amount of waste light used in the home, light pollution outdoors, and plant growing to ensure proper light levels.