Properties7
| Type | Artwork |
| Author | Alfred Stieglitz |
| Movement | Photography |
| Where | The Museum of Modern Art |
| Year | 1925 |
| Note created | Feb 12, 2026 |
| Last updated | Feb 13, 2026 |
Gelatin silver prints. Series of abstract cloud photographs by Alfred Stieglitz, pioneer of the Photo-Secession movement. The Equivalent series (1925–34) represents one of the first deliberate attempts at purely abstract photography, treating clouds as vehicles for emotional expression.