Postmodernism is a broad movement in art and culture that became strong from the 1970s and 1980s. It questioned the ideas of modernism, such as originality, the single great artist and the difference between high art and popular culture. Mixing styles and sources, irony and borrowing became common.
In photography, artists began to use and copy images from advertising, movies, magazines and family albums. They asked how such images shape our ideas about identity and the world. Cindy Sherman's "Untitled Film Stills" (1977-1980), in which she posed as female characters from imaginary films, is a well-known example.
Do you have a better definition? Share it in the comments.
