was a pioneering Swiss photographer whose albumen
photographs, which include stereographs
, comprise portraits, cityscapes and landscapes. He was commissioned by the London firm of Negretti and Zambra
to travel to Asia and document the progress of the Anglo-French troops in the Second Opium War
and, although he failed to join that military expedition, he remained in Asia for several years, producing the first commercial photographs of China
, the Philippines
and Siam (now Thailand
). He was the first professional photographer in Japan, where he trained Ueno Hikoma
, Maeda Genz?
, Horie Kuwajir?
, as well as lesser known members of the first generation of Japanese photographers. One of his works became the earliest known hand-coloured
Japanese photograph. In Siam, Rossier took ethnographic portraits for French zoologist Marie Firmin Bocourt
, who was on a scientific expedition. In Switzerland he established photographic studios
, and he also produced images elsewhere in the country. Rossier is an important figure in the early history of photography
not only because of his own images, but also because of the critical impact of his teaching in the early days of Japanese photography.