The Sigma 50-100mm f/1.8 DC HSM Art is a mid telephoto lens for cropped APS-C sensor cameras with a prime-like super-fast maximum aperture of f/1.8 throughout the entire zoom range.
This is the first DSLR zoom lens to cover 3 popular telephoto prime lens focal lengths (85mm, 105mm, and 135 mm (35mm equivalent)) at f/1.8, and is ideal for event photography, where low light performance and reach is critical; as well as subject focused portrait photography.
Furthermore the lens features an hypersonic motor for fast, accurate and near silent autofocus; as well as coatings/special elements to reduce aberrations, ghosting and flares.
