There are devices to measure almost everything be it sound, pressure or current. Light intensity is another thing toget measured, which can be captured by the device called lux meter.
This device can commonly be a useful one in photography and videography. Photographers usually adjust their shutter and depth of field to get the best click. Lux metersare also useful in filming scenes in outdoors in movies and television shows, as those help in adjusting colouring effects so that there is brightness in every scene.There are various other applications of this meter where it helps in measuring the intensity of light.