SIGMA 18-35MM F/1.8 DC HSM ART LENS FOR NIKON
Aperture Range: f/1.8-16Fast Constant Maximum ApertureDesigned for APS-C-Sized Sensors35mm Equivalent Focal Length: 27-52.5mmHyper Sonic AF MotorInternal Focusing and Zoom DesignFour Aspherical & 5 SLD Glass ElementsSuper Multi-Layer CoatingNikon F Lens MountCompatible with Sigma USB Dock