The wide F2.8 aperture delivers consistent, exceptional performance across all zoom and focus ranges. Its fast autofocus, powered by a dual HLA (High-response Linear Actuator) with a floating focus system, and the Optical Stabilizer with the OS2 algorithm offering up to 7.5 stops of correction*, ensure you capture the perfect shot even in critical moments. Designed for mobility, this durable lens features high rigidity and a premium feel, packed with functions that enhance shooting comfort. | Sigma | | 70-200MM F2.8 DG DN OS Sports L Mount Lens | Black | Best Buy