The world’s first full-frame zoom lens with an F1.8 maximum aperture offers optical performance comparable to that of a prime lens. It features an inner zoom mechanism and a minimum focusing distance of 30 cm. The lens is built with a dust and splash-resistant structure and includes a High-response Linear Actuator (HLA) focus motor. Additionally, it has a water and oil repellent front coating, is designed to minimize focus breathing, flare, and ghosting, and comes equipped with two AFL buttons. The aperture ring includes a de-click function, and the lens is compatible with Lens Aberration Correction.