AF 28/ 1.8 FE is an autofocus lens suitable for E-mount, the lens uses 11 elements in 9 groups, including 3 ED lens, 3 high transparent lens and 2 aspheric lens. HD Nano multilayer coating with water-resistant and anti-fouling coating. Electronic aperture, internal focus, constant lens length. Noiseless STM focus motor. Precision metal structure.