Sigma 50-100mm f/1.8 DC HSM Art Lens for Nikon F

• F-Mount Lens/DX Format

• 75-150mm (35mm Equivalent)

• Aperture Range: f/1.8 to f/16

• Four SLD Elements, Three FLD Elements

• One High-Refractive Index Element

• Super Multi-Layer Coating

• Hyper Sonic Motor AF System

• Fixed, Rotating Tripod Collar

• Rounded 9-Blade Diaphragm

• 82mm Filter Diameter