Neewer 750W 5400K Built-in Ballast Dimmable Daylight Cool Photography Video Light Flash Light RFL-3 Neewer&reg; 750W 5400K Built-in Ballast Dimmable Ring Fluorescent Ring Light Daylight Cool Photography Video Light Flash Light RFL-3 for Canon, Nikon, Olympus, Pentax, Sigma, Panasonic and Other SLR DSLR Cameras;RFL-3 is uniquely designed to provide even light source for static and video photography. ^Three energy saving lamps can be switches on/ off individually. ^Apart from using it as a ring light for macro photography, with the power of totally 90W, ^It can also be used as a side light or top light. ^It lightweight, energy saving and cool characteristics make it your perfect lighting partner.