Optical Performance
- High Optical Performance: Achieves sharpness and clarity.
- Special Low Dispersion (SLD) Elements: Three elements reduce chromatic aberrations.
- Molded Glass Aspherical Element: Minimizes sagittal coma flare and vignetting.
- Large Diameter Lens: 85.4mm diameter for greater peripheral brightness.
- Super Multi-Layer Coating: Reduces flare and ghosting, enhancing contrast and color fidelity.
Autofocus System
- Hyper Sonic AF Motor: Provides quiet, smooth, and fast autofocus performance.
- Full-Time Manual Focus: Allows manual focus control by turning the focus ring at any time.
Design and Build
- Art Line Lens: Part of Sigma’s Global Vision series, ideal for creative and artistic applications.
- Floating System: Adjusts distance between glass elements during focusing for better detail rendering and a minimum focusing distance of 1.3′.
- Rounded Nine-Blade Diaphragm: Produces attractive out-of-focus quality (bokeh).
- Thermally Stable Composite (TSC) Material: Ensures precision and performance in various temperatures.
- Brass Bayonet Mount: Ensures accuracy and durability.
- Engraved Production Year: Year of production is engraved on the lens barrel.
Additional Features
- Lens Hood: Fitted with a rubber connection for secure fit.
- Sigma USB Dock Compatibility: Allows fine-tuning of lens characteristics and firmware updates.
