Matthew has photographed some of the most famous people in the world—including the President of Iceland, Oprah Winfrey, and Carlos Slim, the richest man in the world,. He is best known for his portraits of celebrities, actors, and models, and in 2013 he was commissioned to photography 75 of the top directors and artists in China. His clients include Olay, Pantene, Revlon, Tyra Cosmetics, Sony Entertainment, George Lucas, Adrienne Maloof, Queen Latifah, and Aretha Franklin.