Yongnuo's reputation is built on producing quality photo and video gear at a pricepoint that's hard to beat... and this ring flash unit is no exception. With pro-level capabilities, and a control interface that's accessible even if you're just beginning to explore flash photography, this light kit is a great addition to your gear bag. The light mounts on a camera in two places--on the front of the lens, and on the hotshoe mount. The light itself produces light at a natural color temperature of 5600K and can be adapted to mount on lenses that are 52, 58, 67, and 72mm in diameter. It features a twin-tube design that allows the photographer to set each side of the ring at different power ratios, which can enable the higher contrast you need in macro photography. It also has LED lamps for autofocus-assist in low-light situations. With a charge recycle time of only 3 to 5 seconds, first- and second-curtain sync modes, and a guide number of 45.9' at ISO 100, this flash will have your macro needs covered. The hotshoe component of the flash unit is where the control interface is located, with an LCD screen to show settings and readings and push-button controls to control flash mode, power ratios, and exposure compensation. The controls can also emit audio feedback and alerts so you can keep your eyes on the shot while staying aware of what the flash readings are.