The unsung heroes of the National Geographic Society, which was founded in 1888 to increase and diffuse geographic knowledge, are surely the photographers and camerapeople who have brought images from far-flung corners of the world into our homes. They have been so successful at capturing life in motion that we scarcely think of the people who had the guts to stand their ground while a violent volcano erupted or an elephant charged. Meet the Cameramen Who Dared.