The Sigma 18-50mm f/2.8 DC DN Contemporary is a versatile zoom lens designed for Sony E-mount cameras. With a fast maximum aperture of f/2.8, this lens is ideal for capturing images in low light conditions or with a shallow depth of field. It offers a focal length range of 18-50mm, making it suitable for a variety of photography styles and situations. With both auto and manual focus options, this lens provides flexibility for photographers looking to achieve precise shots. Made with durable plastic exterior material, this Sigma lens is a reliable choice for photographers seeking quality and performance. Opened this lens 2weeks ago and use once , selling because i needed the money for another gadgets