When an ex-boxer overheard an angry American’s gripes about being unable to get a passport photo in time to fly home the next day, he had a lightbulb moment. David Sharkey had been honing his photographic skills since the late 1940s, when he sold his ration books and bought a Leica camera, becoming a ‘smudge,’ snapping tourists in London’s Trafalgar Square . The derogatory moniker came from complaints when tourists failed to receive their photos and were allegedly told by errant lensmen that