Patrick Smith's Story Behind the picture - capturing Karsten Warholm's 'Scream'

Getty Images photographer Patrick Smith was the man behind the lens to capture the shock and elation that Norway's Karsten Warholm experienced moments after securing 400m hurdles gold at the IAAF World Championships London 2017, an image that immediately elicited comparisons to Norwegian Expressionist artist Edward Munch's famous painting, 'The Scream'. The US-based photographer tells us just how he did it.