What are the features and specifications of the Sigma 70-210mm lens?

The Sigma 70-210mm lens is a telephoto zoom lens designed for DSLR cameras. It has a focal length range of 70-210mm, allowing for versatile shooting options. The lens has a maximum aperture of f/4-5.6, providing good low-light performance. It also features optical image stabilization to reduce camera shake and produce sharp images. The lens is compatible with various camera mounts, making it a versatile option for photographers.