Ansel Adams (1902–1984) was an American photographer and environmentalist whose black‑and‑white landscapes of the American West remain among the most iconic images in photographic history. Born in San Francisco and introduced to photography during a family trip to Yosemite in 1916, Adams soon became deeply connected to the Sierra Nevada, a relationship that shaped both his artistic vision and his lifelong advocacy for wilderness preservation. He became one of the founders of Group f/64, promoting “pure photography” characterized by sharp focus, rich tonal range, and meticulous printing. His technical innovations—including the Zone System, developed with Fred Archer—reshaped photographic practice by allowing photographers to control exposure and development with unprecedented precision.

Adams’s photographs, such as “Moonrise, Hernandez, New Mexico” and his numerous Yosemite landscapes, present nature with clarity, luminosity, and expressive depth. Beyond aesthetic achievement, his work played a significant role in American conservation, supporting the expansion and protection of national parks through books, exhibitions, and political advocacy. His decades‑long association with the Sierra Club reinforced his belief that photography could serve as a powerful tool for environmental activism. Adams also shaped the institutional recognition of photography as fine art: he helped establish the photography department at the Museum of Modern Art, co‑founded Aperture magazine, and later co‑founded the Center for Creative Photography at the University of Arizona.

Over his lifetime, Adams became one of the most influential photographers in the United States, receiving the Presidential Medal of Freedom in 1980 for his artistic and environmental contributions. His legacy endures through museum collections, publications, environmental efforts, and the continued visibility of his images in both popular culture and the fine‑art world. His work remains a benchmark of technical mastery and an enduring testament to the power of landscape photography.

Ansel Easton Adams (February 20, 1902–April 22, 1984) was an American photographer and environmental advocate best known for black-and-white landscapes of the American West. After receiving his first camera during a 1916 visit to Yosemite National Park, he developed his photography through repeated visits to the Sierra Nevada and his involvement with the Sierra Club. He joined the organization at 17, was elected to its board in 1934, and served there for 37 years.

Adams moved away from pictorialism during the 1920s in favor of sharply focused, carefully exposed photographs with an extensive tonal range. His 1927 image Monolith, the Face of Half Dome became an important expression of his approach to visualizing a finished print before exposure. In 1932, he formed Group f/64 with photographers including Imogen Cunningham and Edward Weston. He later developed the Zone System with Fred Archer, linking exposure, negative development, and printing to the intended tonal result.

His photographs also supported conservation campaigns. Sierra Nevada: The John Muir Trail (1938) and his congressional testimony contributed to the establishment of Kings Canyon National Park in 1940. He photographed lands administered by the U.S. Department of the Interior beginning in 1941 and documented the Manzanar incarceration camp during World War II. Adams advised the Museum of Modern Art’s photography department, established a photography department at the California School of Fine Arts in 1945, helped found Aperture in 1952, and co-founded the Center for Creative Photography at the University of Arizona. He received the Presidential Medal of Freedom in 1980.