The Sigma 18-300mm f/3.5-6.3 DC MACRO HSM Contemporary Lens for Sony A helps in achieving a versatile focal length equivalent of 27-450mm in your camera. With its maximum aperture range of f/3.5-6.3, the lens is constructed with 17 elements in 13 groups. Benefiting from the inclusion of one SLD and four FLD elements, the lens provides a clearer and sharper imagery. Equipped with a Super Multi-Layer coating on the elements, the lens achieves less flare and improved contrast. Additionally, the Hyper Sonic Motor ensures quiet and accurate focusing. It also comes with optional AML72-01 close-up lens as well as a front 72mm filter thread.