A DSLR camera, or Digital Single-Lens Reflex camera, is a type of digital camera that uses a mirror mechanism to reflect light from the lens to an optical viewfinder. This allows photographers to see exactly what the lens sees, making it easier to compose shots. DSLRs are popular among both amateur and professional photographers due to their versatility and image quality. These cameras typically offer interchangeable lenses, allowing users to choose the best lens for different situations, such as wide-angle for landscapes or telephoto for wildlife photography. DSLRs also provide manual controls, enabling photographers to adjust settings like exposure and focus for creative effects.