Ansel Easton Adams (February 20, 1902 - April 22, 1984) was an American photographer born in San Francisco.

Famous for his black & white landscape photographs of the national parks (Yosemite National Park among others), and as an author of numerous books about photography, including his trilogy of technical instruction manuals (The Camera, The Negative and The Print). He co-founded the photographic association Group f/64 along with other masters like Edward Weston, Willard Van Dyke, Imogen Cunningham and others.

He invented the zone system, a technique which allows photographers to translate the light they see into specific densities on negatives and paper, thus giving them better control over finished photographs. Adams also pioneered the idea of visualization (which he often called 'previsualization', though he later acknowledged that term to be a redundancy) of the finished print based upon the measured light values in the scene being photographed.

Adams disliked the uniformity of the education system and left school in 1915 to educate himself. He originally trained himself as a pianist, but at age fourteen was given a camera as a gift while visiting Yosemite National Park. He later met his future wife there, Virginia Best. Adams long alternated between a career as a concert pianist and one as a photographer.

At age 17 Adams joined the Sierra Club, a group dedicated to preserving the natural world's wonders and resources. He remained a member thorughout his lifetime and served as a director, as did his wife, Virginia. Adams was an avid mountaineer in his youth and participated in the club's annual "high trips", and was later responsible for several first ascents in the Sierra Nevada. It was at Half Dome in 1927 that he first found that he could make photographs that were, in his own words, "...an austere and blazing poetry of the real". Adams became an environmentalist, and his photographs are a record of what many of these national parks were like before human intervention and travel. His work has promoted many of the goals of the Sierra Club and brought environmental issues to light.

Photographs in Adams' limited edition book, Sierra Nevada: The John Muir Trail, along with his testimony, are credited with helping secure the designation of Sequoia and Kings Canyon as national parks in 1940.

During World War Two Adams worked on creating epic photographic murals for the Department of the Interior. Adams was distressed by the Japanese American Internment that occurred after the Pearl Harbor attack. He was given permission to visit the Manzanar War Relocation Center in the Owens Valley, at the foot of Mount Williamson. The resulting photo-essay first appeared in a Museum of Modern Art exhibit, and later was published as Born Free and Equal: Photographs of the loyal Japanese-Americans at Manzanar Relocation Center, Inyo County, California.

Adams was the recipient of three Guggenheim fellowships during his career. He was elected in 1966 a Fellow of the American Academy of Arts and Sciences. In 1980 Jimmy Carter awarded him the Presidential Medal of Freedom, the nation's highest civilian honor.

Publishing rights for the Adams' photographs are handled by the trustees of The Ansel Adams Publishing Rights Trust.

The Minarets Wilderness in the Inyo National Forest was renamed the Ansel Adams Wilderness in 1984 in his honor. Mount Ansel Adams, a 11,760' peak in the Sierra Nevada, was named for him in 1985.

-Wikipedia