The Sony FE 28-70mm F3.5-5.6 OSS SEL2870 is a zoom lens designed for Sony cameras, featuring a maximum aperture of f/3.5 and a focal length range of 28-70mm. It has both auto and manual focus options, making it versatile for various shooting styles. The lens is lightweight at 295g and made with a durable plastic exterior. Being part of Sony's FE series, this lens is known for its quality and performance, making it a reliable choice for photographers looking for a reliable telephoto zoom lens.