The 75mm f1.8 is a high-grade, fast aperture portrait lens featuring metallic construction and a light weight of just 10.7 oz. With a 35mm equivalent focal length of 150mm, it is ideally suited for studio portraits, theatre stage, and indoor sports photography. A large, bright 50mm front lens element compliments a sophisticated optical design of 10 individual lens elements in 9 groups, including a total of 3 ED lenses and 2 HR lenses. Its large f1.8 maximum aperture captures clear, sharp images when the lights are low, while its MSC (Movie and Still Compatible) AF drive assures fast and nearly silent focusing.