This picture is created by Zach Arias. He is an American photographer who uses mostly just ONE light source. Except for this picture. He made a DVD of his workshops named “ONE Light”.
Camera: Canon 5DMkII, 35mm, ISO 100, f5,6, shutterspeed 1/125.
Lighting: Zach used for this a picture one HSF (Canon 580 ex II) with grid (Honl), positioned above the camera so that a butterflylighting created. The power of the flash: 1 / 4 . Under the table, he has mounted three HSF (Nikon SB800) set power to 1 / 64. Everything is so balanced that he obtained a good result.
ps in 2003 he bought his first Nikon D100, second hand. Now in 2011, he sold everything and switched to Canon. http://zackarias.com