- EF Mount Lens/Full-Frame Format
- Aperture Range: f/1.4 to f/16
- FLD and Special Low Dispersion Elements
- Two Aspherical Glass Elements
- Super Multi-Layer Coating
- Hyper Sonic AF Motor
- Full-Time Manual Focus Override
- Rounded 9-Blade Diaphragm
- Thermally Stable Composite Material
- Compatible with Sigma USB Dock