Aputure AHL-C60 LED Light Macro Ring Flash For DSLR Camera Canon EOS Brightness Adjustment Wheel Half-pressing shutter activates AF-assist lamp Left and right flash for more dynamic effect Its light output under the Flash mode is twice as high as continuous mode, realize the ture Macro Ring Flash Six Flash Modes:Full Brightness, Left-side Brightness, Right-side Brightness, Fully Flash, Left-side Flash, Right-side Flash, to meet a variety of needs