Ansel Adams was a renowned American photographer, best known for his stunning black and white images of the Yosemite National Park. He was born in 1902 and is considered one of the most influential photographers of the 20th century. His work has been widely exhibited and published, and he is credited with helping to establish photography as an art form. Adams was also an environmentalist and conservationist, and his photographs of Yosemite helped to bring attention to the beauty of the park and its importance in preserving nature.