Interchangeable lenses are camera lenses that can be swapped out for different types, allowing photographers to choose the best lens for their specific needs. This flexibility is common in DSLR and mirrorless cameras, enabling users to adapt to various shooting conditions, such as landscapes, portraits, or macro photography. These lenses come in various focal lengths and apertures, affecting the depth of field and the amount of light that enters the camera. Popular types include wide-angle, telephoto, and macro lenses, each designed for particular photographic styles and subjects, enhancing creative possibilities for photographers.