Designed for APS-C cameras but works with all E Mount cameras. Has a wonderful wide aperture at 1.8, opening wide enough to let lots of light in and give great shallow depth of field with beautiful bokeh. Primarily used as a portrait lens at 50mm, this can be used for good mediums and even wides if you get far enough away. OVERVIEW Sony 50mm f1.8 OSS Lens - Sony E Mount (p/n SEL50F18B.AE). E 50mm F1.8 OSS Prime Lens This 50mm mid range telephoto lens offers a focal length that is perfect for portraiture and a range of other subjects, a bright F1.8 maximum aperture, Optical SteadyShot (OSS) image stabilization and impressive image quality, all in a surprisingly compact and lightweight package. Add responsive, quiet autofocus and aperture operation, and you have a lens that is ideally suited to shooting movies as well as stills. Circular Aperture When changing your aperture to defocus the background, the light sources appear blurred. This ‘bokeh’ effect of the blurred background can be enhanced with circular aperture blades used in this lens. Conventional aperture blades have flat sides creating unappealing polygonal shaped defocussed points of light. α lenses overcome this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2... Focal Length: 50mm Max Aperture: f/1.8 Lens Format: APS-C Lens Type: Standard Lens Mount: Sony E Image Stabilisation: Yes Type: Photo