Neewer FC-110 18LED Macro Ring Flash Light For Canon 5D MarkIII 5D MarkII 650D/T4i 600D/T3i 550D/T2i 1100D/T3 60D 7D, Nikon D7000, D3200, D3100, D5100,D5000,Olympus, Pentax SLR Cameras Power Saving Mode - 60 seconds without any operation enters sleeping mode, press any key to wake up. Two Kinds of Color Temperature - equipped with 3200K CT rings, it can helps you obtain the most desirable effects with the correct option of CT part under different environment. Free Option Between Lamp L, Lamp R and Both Lamps - free option between L/R lamps and long brightness mode to achieve a more vivid visual effect. High Precision Manual Adjustment - 8 power levels, each level has 3 fine tuning adjustment, giving you a more precise brightness output and flexible brightness control.