The term "24-70mm" refers to a type of camera lens that has a focal length range from 24mm to 70mm. This range makes it versatile for various photography styles, including landscapes, portraits, and events. The lens is often favored by professional photographers for its ability to capture wide-angle shots as well as close-up images without needing to change lenses. Typically, a 24-70mm lens is designed for use with DSLR or mirrorless cameras. It usually features a constant aperture, allowing for consistent exposure settings throughout the zoom range. This lens is popular among both enthusiasts and professionals for its quality and flexibility.