Antoine François Jean Claudet (August 18, 1797 – December 27, 1867) was a French photographer and artist active in London who produced daguerreotypes.

[3] He invented the red darkroom safelight, and it was he who suggested the idea of using a series of photographs to create the illusion of movement.

From 1841 to 1851 he operated a studio on the roof of the Adelaide Gallery (now the Nuffield Centre), behind St. Martin's in the Fields church, London, where in 1843 he took one of only two surviving photographs of Ada Lovelace.

[6][7] In 1848 he produced the photographometer, an instrument designed to measure the intensity of photogenic rays; and in 1849 he brought out the focimeter, for securing a perfect focus in photographic portraiture.

[3] Claudet received many honours, among which was the appointment, in 1853, as "Photographer-in-ordinary" to Queen Victoria, and the award, ten years later, of an honor from Napoleon III of France.