SIGMA 35MM F/1.4 DG HSM ART LENS FOR NIKON DSLR CAMERAS
Aperture Range: f/1.4-16Hyper Sonic Motor (HSM)Floating Internal Focus SystemMinimum Focusing Distance: 11.8"Anti-Flare Super Multi-Layer CoatingSpecial & "F" Low Dispersion ElementsFront Filter Thread Diameter: 67mm9x Circular Aperture BladesCompatible with Sigma USB Dock