INCREDIBLY SHARP: State-of-the-art optics, using two aspherical elements and one ED (Extra-low Dispersion) glass element, deliver high resolution and suppress colour fringing in all parts of the image. Delivering high corner-to-corner resolution and beautiful bokeh, the SEL50F25G is an excellent compact, lightweight full frame lens for cityscapes, landscapes and videography, these features making it an excellent portrait lens too. BEAUTIFULLY SMOOTH BACKGROUNDS: A 7-blade circular aperture on this Sony lens creates beautiful circular background bokeh defocus effects with a large F2.5 aperture. FAST AND PRECISE: Two linear motors deliver fast, precise AF with excellent tracking capability, fully utilising the continuing rapid advances in the speed performance of camera bodies. Taking maximum advantage of this performance, tracking is maintained despite instantaneous changes in subject motion, making the lens ideal for situations like snap shooting of moving subjects. You'll never miss a shot with this lightweight and compact lens. SUPERB BUILD QUALITY: The high-quality build uses metal (aluminium) for the exterior finish and hood, achieving a sophisticated look, contributing to increased strength and durability. The iris ring indices, focal length markings, and Sony logo on the hood of the 50mm lens, are engraved rather than printed, giving a finish with a sophisticated feel. GREAT FOR MOVIE SHOOTING: The fast, precise AF with excellent tracking performance delivered by two linear motors is also quiet, making this FE lens ideal for both still and movie shooting. A great 50mm view, intuitive operability, in a compact, lightweight design.