"Equivalent, from Set A (Third Set, Print 2)" is a gelatin silver print from Alfred Stieglitz's groundbreaking Equivalents series, created between 1925 and 1931. Through close framing of clouds and sky, Stieglitz sought to demonstrate that photography could convey abstract emotional and spiritual states rather than merely document reality. The work exemplifies his modernist vision and his argument for photography as a fine art medium capable of expressing the photographer's inner experience.