Widely considered the world’s most influential sports photographer, and cited as the "Rembrandt of sports photography” due to his use of light, color, and composition, Iooss’ images transcend the fame of his subjects and have come to represent modern sports culture. Over the past 60 years, his photographs have graced the pages of Sports Illustrated, including more than 300 covers. His work has changed the definition of what a “good sports photograph" should be.

Walter has photographed the most recognized athletes in sports history, including Muhammad Ali, Michael Jordan, Kobe Bryant, LeBron James, Tiger Woods, and hundreds more. His catalog also contains the most iconic imagery of Michael Jordan in the world.