Professional light intensity (lux) meter that measures illumination levels in lux. It features direct reading in lux or fc (foot candles) and can display the measured light color temperature in degrees Kelvin (K) if your device supports this. NOTE: This app requires device with a light sensor to function. Also, light color and infrared measurement works only on small number of devices. In order for this meter to be exact you need to perform a calibration procedure described in the apps's info screen.