The great evolution of the macro ring flash here comes the latest model with professional TTL function in TTL mode set the shooting mode as M / AV / TV then set the speedlite manually through the lens of the cameraand get the perfect performance. Brand SkyBlue Model MK-14EXT Quantity 1 piece(s) per pack Color Black Material ABS + Brass Compatible Camera Brand Nikon Compatible Models Nikon D4X / D4 / D800 / D700 / D7000 / D650 / D600 LED Quantity 2 x LED semi-ring tubes Color Temperature 5500 K Brightness 5500 Lumens Light Angle 80 degrees (vertical) / 80 degrees (horizontal)