Photograph by Antoine Francois-Jean Claudet (1797-1867) who learnt the daguerreotype process from Louis Daguerre (1787-1851) in Paris. The subject, Talbot (1800-1877), was a mathematician, physicist, philologist and pioneer of photography. He is best known for his development of the calotype in 1840, which was the first process for photographic negatives from which multiple prints could be made. This process made the reproduction of prints easier than ever before.
© Royal Photographic Society / Science & Society Picture Library