Large F1.8 maximum aperture - In combination with the in-body image stabilization provided by a series cameras, the bright F1.8 maximum aperture of this lens offers a significant advantage for hand-held shooting in low-light situations. The high resolution of this prime lens and the smooth defocusing achieved by its large F1.8 aperture can be utilized to create images that have impressive depth and three-dimensionalitySAM (Smooth Autofocus Motor) - Autofocus signals received from the camera body control a motor built into the lens. The internal motor directly drives the focusing group for smooth autofocus operation. Uncompromised basic features - At 0.23 meters the minimum focusing the SAL35F18 makes it possible to move in for spectacular close-ups. The front filter mount does not rotate when the lens focuses, and this is a distinct advantage for polarizing filter use. A distance scale is also provided.