The Sigma 17-70mm f/2.8-4 DC OS HSM Macro C is a lens compatible with all models of small sensor Nikon cameras, i.e. APS_C. the lens has the following optical characteristics: 16 lenses divided into 14 groups, minimum aperture of f/22, shooting angle of 79.7 degrees to 22.9 degrees, minimum focusing distance of 22 centimeters, seven aperture blades and a weight specific equal to 465 grams. the lens is equipped with a petal lens hood model LH780-03 as standard. The maximum aperture of f/2.8 at 17 millimeters and f/4 at 70 millimeters allows for optimal correction perfect for taking photos on the move. the lens has been built with quality raw materials and features a super multi-layer coating that manages to reduce flare and ghosting ensuring excellent contrasts in different types of shots. The automatic, fast and silent focusing is made optimal by the presence of a hypersonic HSM motor. The bayonet is made of brass to allow the lens to resist external aggression, last over time and ensure high precision shots. The Sigma 17-70mm f/2.8-4 DC OS HSM Macro C lens features two FLD optical glass lenses, one SLD optical glass lens and three A-glass lenses. double aspheric surface. Ideal for: the Sigma 17-70mm f/2.8-4 DC OS HSM Macro C lens is particularly suitable for photographers who take reportage images given the lightness of the product and its adaptability to different photographic situations. The optical characteristics also allow professional photographers to create exceptional artistic photos.