The Sony SEL 50mm F/1.8 Lens is well-suited for capturing the nuances and subtleties of your subjects, and it provides an advantage when shooting in low-light scenes. The lens features a seven-blade circular aperture that creates a defocused bokeh effect. The aspherical optical design reduces the amount of distortions and aberrations that can plague a normal camera shot. The DC motor focus actuator system achieves a fast, quiet, and accurate focus. The solid durable metal structure is designed to operate in a huge range of difficult and challenging outdoor environments.