Photojournalism involves using images and video in journalism to tell a story in an objective, timely, and narrative way. It requires photographers to make quick decisions while exposed to risks in the field. Henri Cartier-Bresson and Robert Capa were legendary photojournalists, with Cartier-Bresson known for his "decisive moments" and Capa documenting several wars including Normandy. Photojournalism risks life to capture impactful photos that convey important events and stories.