This Sigma 56mm lens is a great addition to any Sony camera kit, allowing photographers to capture beautiful portraits with a maximum aperture of f/1.4. The lens is compatible with Sony cameras and features a fixed/prime focus type, making it ideal for portrait photography. The lens mount is a Sigma DC mount, and the focal length is 56mm. This lens is perfect for those who want to capture high-quality images without worrying about the condition of the lens. With a compatible filter size of 55mm, this lens is a great investment for any photographer looking to expand their collection. Whether you are an amateur or professional photographer, this Sigma 56mm lens is sure to deliver excellent results every time.