It was the "W. & F. Langenheim" firm and known as the Philadelphia daguerrotype establishment. Asser's experiments with Daguerrotype were initially reproductions of academic art. Fitz was in partnership with Wolcott and developed a patented Daguerrotype camera. Emilie Bieber opened a daguerrotype studio in Hamburg in 1852. He made a name for himself as a Daguerrotype portrait artist in the United States. The daguerrotype became the most common method of photography during the 1840s and 1850s.