DCS, or Digital Camera System, was the name used by Kodak for its pioneering range of digital single-lens reflex (DSLR) cameras. Introduced in the 1990s, these cameras combined traditional 35mm SLR bodies with digital imaging sensors, allowing photographers to capture and store images digitally instead of on film. The Kodak DCS series played a key role in the transition from film to digital photography, particularly for professional photographers in fields such as photojournalism, studio, and commercial photography. Understanding historic systems like the DCS helps appreciate the evolution of digital imaging technology in modern cameras.