Thanks and congratulations to mmradman who mentioned that Korda took the famous original picture of Che Guevara with a Leica, 50 years ago: "To take the photo, Korda used a Leica M2 with a 90 mm lens, loaded with Kodak Plus-X pan film. In speaking about the method, Korda humbly remarked that "this photograph is not the product of knowledge or technique. It was really coincidence, pure luck." (from Wikipedia)