Joseph Nicéphore Niépce

Using silver chloride, Joseph Nicéphore Niépce of France produced the first fixed positive image that could be called a photograph.

Joseph Nicéphore Niépce produced a permanent positive image on pewter coated with bitumen of Judea; he called the process heliography.

Joseph Niépce , improving on his earlier experiments, produced the first permanent photograph.

Louis Jacques Mandé Daguerre produced the first recognizable photographic image printed on a treated metal plate, a precursor to the Daguerrotype.

Louis Jacques Mande Daguerre 's daguerrotypes (photographic images on silvered copper plates) were shown at a joint meeting of the Académie des Sciences and Académie des Beaux-Arts in Paris.