Yukio Kuniyoshi, the latest subject in the Karate Masters Portrait Project. A master of kobudo he is highly proficient in a wide range of traditional weapons. The following shot really shows the advantage of using a powerful studio flash with a rapid flash duration for this project. The Profoto 7a gives me a flash duration of up to 1/12,000 second. This allows me to stop the suruchin ball and chain as it whizzes around Kuniyoshi sensei’s body.