David Hockney is a British artist considered one of the most influential of the 20th century. In the 1980s, he pioneered a new technique called "The Joiners" where he took Polaroid photos of scenes from various angles and arrangements and glued them together into photo collages, later expanding this to include color prints. Hannah Hoch was a German artist known as one of the originators of photo montage, where she combined different art mediums like photos, illustrations, and paintings into collages. Man Ray was an American artist who pioneered photograms, which he called "rayographs," made by arranging objects on light-sensitive paper and exposing it to light to create unique abstract images without using a