Oscar Victor Lange (1853–1913) was a leading photographer and occasional landscape painter in the San Francisco Bay Area of California during the late 19th century. His work is typically credited as “O.V. Lange”.
Lange was born on June 6, 1853 in Hoboken, New Jersey to German immigrants Albert Clement and Emma (Leischhardt) Fahrenberg. His father was a portrait painter. Oscar received formal training as both an architect and artist. The Fahrenbergs were constantly on the move, showing up in New Orleans during the 1860 census and in Texas for the 1870 census. In 1873 Oscar moved to San Francisco and adopted the surname “Lange” while working with Ernest W. Newth making stereographs. In the 1880s, he opened his own studio and gallery on Market Street, moving to Montgomery Street in 1887. Two years earlier he had moved his residence to Berkeley, California.