Eadweard James Muybridge was an English photographer important for his pioneering work in photographic studies of motion and in motion-picture projection. He adopted the name Eadweard Muybridge, believing it to be the original Anglo-Saxon form of his name. He immigrated to the United States as a young man but remained obscure until 1868, when his large photographs of Yosemite Valley, California, made him world famous. Muybridge is known for his pioneering work on animal locomotion in 1877 and 1878, which used multiple cameras to capture motion in stop-action photographs, and his zoopraxiscope, a device for projecting motion pictures that pre-dated the flexible perforated film strip used in cinematography.
In his earlier years in San Francisco, Muybridge had become known for his landscape photography, particularly of the Yosemite Valley. He also photographed the Tlingit people in Alaska, and was commissioned by the United States Army to photograph the Modoc War in 1873. In 1874 he shot and killed Major Harry Larkyns, his wife's lover, and was acquitted in a jury trial on the grounds of justifiable homicide. He travelled for more than a year in Central America on a photographic expedition in 1875.
In the 1880s, Muybridge entered a very productive period at the University of Pennsylvania in Philadelphia, producing over 100,000 images of animals and humans in motion, capturing what the human eye could not distinguish as separate movements. He spent much of his later years giving public lectures and demonstrations of his photography and early motion picture sequences. He also edited and published compilations of his work, which greatly influenced visual artists and the developing fields of scientific and industrial photography.