Carlo Ponti was an Italian photographer and optician. After learning photography while working as an optician's assistant in Paris, Carlo Ponti moved to Venice, Italy, around 1852. He opened a shop selling optical equipment as well as architectural views of Venice, Padua, and Verona and reproductions of works of art. Ponti also invented optical instruments designed to allow a greater experience of three-dimensionality in two-dimensional photographs, including the megalethoscope, the graphoscope, and the alethoscope, which was variously called a dioramascope or pontioscope. In 1866 Ponti was appointed optician and photographer to the king of Italy.