Photojournalism is a branch of the field of journalism characterized by the use of images to tell a story. The images in a photojournalism piece may be accompanied with explanatory text, or shown independently, with the images themselves narrating the events they depict. Photojournalists can be found working all over the world, from the halls of the White House to the steppes of Asia, and they deal with a broad assortment of situations on a daily basis. Many major newspapers have a photojournalism staff, and others rely on photographs included in a press pool by freelance photojournalists.

People have been using images to depict events for centuries, from rock paintings to engravings in major newspapers. The first big event to be captured in photography was the Crimean War, establishing the groundwork for the professional field of photojournalism. Initially, photographs were often used to accompany text stories to provide some variation and visual interest, but over time, images began to be used more exclusively to narrate stories in the media.

The field of photojournalism is distinct from that of documentary photography. Although both involve taking photographs which are objective, honest, and informative, photojournalism involves photographing specific events, while documentary photography focuses on ongoing situations. A photographer who follows traditional farmers in rural England is a documentary photographer, while a photographer who takes pictures of the aftermath of a suicide bombing for publication in the news is a photojournalist.

Both film and digital cameras, along with video cameras, can be used by photojournalists. The equipment tends to be state of the art, with many photojournalists seeking out lightweight, rugged equipment so that they are not hindered by the tools of their trade. Getting the perfect picture can also involve a fair amount of danger, as it involves being present on the front lines of an event. At the Queen of England's garden party, this may not be terribly risky, but photographers who work in war zones and in periods of civil unrest face significant risks.

Some people pursue a career in photojournalism with self-taught skills, usually in combination with a series of internships at newspapers and press organizations. It is also possible to receive an education in photojournalism at a college or university. A degree can increase a young photojournalist's chances of being accepted for an internship and further training, but it is not required. This career is best suited for active people who enjoy being out in the world and are willing to take risks.