Who is Orson Welles and what is he best known for?

Orson Welles is a highly influential figure in the history of cinema, most noted for his groundbreaking work in filmmaking, particularly for "Citizen Kane." Released in 1941, the film revolutionized narrative and technical aspects of filmmaking, which included innovative camera techniques, deep focus, and nonlinear storytelling. Welles co-wrote, directed, and starred in the film at the young age of 25, displaying remarkable artistic vision and creativity that set new standards in Hollywood.

"Citizen Kane" is often cited as one of the greatest films ever made, not only for its storytelling but also for Welles' audacious use of sound and light, which contributed to its unique atmosphere and narrative depth. The film's exploration of power, memory, and human complexity still resonates today, and Welles' contributions to the film have left a lasting legacy that continues to influence filmmakers.

While Welles had roles in television later in his career, and he made contributions to radio as well, his most significant impact lies in his innovative approach to film with "Citizen Kane." This distinguishes him clearly as a landmark figure in cinematic history because of the profound changes he brought to the art of filmmaking rather than in the other areas mentioned.