What does EV and LUX stand for?

EV stands for exposure value, so it measures exposure. Measuring EV helps you make the lighting just right, not too bright and not too dark. This is mostly useful for photographers and cinematographers. Using Lumu Power will help you determine the right exposure so you won't have to edit your photos/videos after shooting. You can read more about it in this article.

LUX measures luminous flux per unit area. It is equal to one lumen per square meter. It is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. You can watch this short video that explains it quite nicely. LUX values can help you determine how strong your lights are, how much light they emit.