What was Georgia O'Keeffe's husband Alfred Stieglitz best known for?

Alfred Stieglitz was best known for photography.

Stieglitz was a pioneering American photographer who argued that photography should be recognized as a fine art. He made photographs of urban scenes, landscapes, and people, and helped promote modernist art through exhibitions and publications. His work contributed to the acceptance of photography in major art institutions.

He also played a major role as a gallery owner and editor. His New York gallery 291 exhibited European modernists alongside American artists, while the journal Camera Work published photography and criticism. Through these activities, he introduced many American viewers to artists such as Pablo Picasso, Henri Matisse, and Constantin Brâncuși.

Stieglitz's relationship with O'Keeffe connected two influential artistic practices, but their careers were not the same. O'Keeffe was primarily a painter and draftsman; Stieglitz was primarily a photographer, curator, publisher, and advocate for modern art. His extensive photographic portraits of O'Keeffe are now central to the history of their partnership.