Where innovation meets precision, the SIGMA 28-45mm F1.8 DG DN | Art Lens stands as the world's first full-frame zoom lens with a constant maximum aperture of F1.8. This groundbreaking lens delivers exceptional sharpness and clarity, rivaling that of prime lenses, and is a testament to SIGMA's pioneering spirit in crafting unique, large-aperture zoom lenses. Building on the legacy of the SIGMA 18-35mm F1.8 DC HSM | Art and the SIGMA 24-35mm F2 DG HSM | Art, this lens is a versatile addition to the Art lineup, offering photographers and filmmakers unparalleled creative possibilities.Designed for full-frame cameras, the SIGMA 28-45mm F1.8 DG DN | Art lens features an inner zoom mechanism that maintains a constant lens length, enhancing stability and ease of use whether shooting handheld or mounted on a tripod or gimbal. With a minimum focusing distance of 30cm across the entire zoom range and a maximum magnification ratio of 1:4 at the telephoto end, this lens excels in close-up shooting, allowing for precise focus in confined spaces without compromising image sharpness.Despite its advanced capabilities, the lens is remarkably lightweight, weighing less than 1kg. This makes it an ideal choice for photographers and videographers seeking portability without sacrificing performance. The lens also accommodates a versatile filter size of Dia. 82mm, ensuring convenience in various shooting scenarios.Optically, the SIGMA 28-45mm F1.8 DG DN | Art lens is enginee