Daguerreotype
Morse met the inventor of the daguerreotype, Louis-Jacques-Mande Daguerre, in Paris in January 1839 when Daguerre's invention was announced [2]. While the daguerreotype fascinated Morse, he was concerned about how the new invention would compete with his telegraph. However, Morse's viewing of the daguerreotype alleviated his fears when he saw how revolutionary its technology was. Morse wrote a letter to his brother Sidney describing Daguerre's invention, which Sidney then published in the New-York Observer on April 20, 1839. While this was not the first report of the daguerreotype to appear in America, it was the first in-person report to appear in the United States.
Claude Testot-Ferry
In 1826, under Charles X, he retired at the rank of Maréchal de Camp (equivalent of Général de Brigade). Aged around 70, he was one of only two officers of the army of the First Empire ever to be photographed, in a daguerréotype, since the end of his life coincided with Daguerre's invention of this format in 1835.