Feature: the led macro flash is the perfect choice for the photographer who requires shadow-Free illumination. It is designed for close-Up, macro, medical, scientific, and forensic photography as the flashlight source is positioned directly between the camera lens and subject providing an even illumination. Full innovation led technology. More approach natural light use high quality led light. There are seven levels of luminance is meet the higher photography needs under the innovation function left and right flash function make the object appeared in the third dimension for a macro shot, scientific research, medical and personal hobbies of photography. Mount the flash product on the lenses.1. Attached are equipped with52Mm, 55Mm, 58Mm,62Mm, 67Mm, 72Mm 77Mm, seven different adapter ring.2. Press the annular light lock and place it on the lens with the adapter ring, loosen the lock button, when the annular light has locked in the adapter ring already. Four working modes: light mode, flash mode, l mode(Left half of the annular flash), r mode(Right half of the annular flash).