A photographer is someone who is skilled at taking pictures or photographs with a camera. An amateur photographer takes pictures for their own use. A professional photographer takes pictures as all or part of their job. Many people hire a photographer for their wedding or other special events. Photographers work in many different specialties. Photographers who produce moving rather than still pictures are often called cinematographers, videographers or camera operators, depending on the commercial context. Photographers are also categorized based on the subjects they photograph. Some photographers explore subjects typical of paintings such as landscape, still life, and portraiture. Other photographers specialize in subjects unique to photography, including street photography, documentary photography, fashion photography, wedding photography, war photography, photojournalism, and commercial photography.