Ringflash easy to use and powerful, it has served well and works perfectly, with good battery life. The intensity adjustment is very convenient, as well as being able to split the left / right lighting. I mainly use in the studio, in addition to pictures lamps, including to unclog shadows. Its temperature does not bother me for this use. I intend very soon to use the outdoor macro, I can at that time make me a real idea of its potential. Highly recommend