The Canon EF 55-200mm 1:4.5-5.6 II USM Ultrasonic Zoom Lens is a versatile and high-quality lens designed for Canon EOS DSLRs. With a maximum aperture of f/4.5-5.6 and a focal length range of 55-200mm, this lens allows for capturing a wide variety of subjects with both auto and manual focus options. Made by Canon, a trusted brand known for their commitment to quality, this lens is ideal for photographers looking to expand their creative capabilities with a reliable and durable zoom lens.