German Expressionist cinema of the 1920s differed from the Hollywood studio system in several key ways: it did not adopt the vertical integration model and directors maintained greater creative control, it was more closely connected to the artistic Expressionist movement in Europe, and actors were more concerned with artistic reputation than celebrity publicity. Expressionist films often featured Expressionist themes of madness, paranoia, and subjective perspectives through their use of stylized architecture, geometric forms, and stark contrasts of light and shadow.