Dual HLA Autofocus
Driven by dual HLA (High-response Linear Actuator) motors, quick and quiet autofocus is provided,
greatly benefiting the quality of both photo and video content taken with this lens.
Its floating focus configuration creates significantly less movement in each focus group,
resulting in extremely responsive focusing performance.
OS2 Algorithm
Sigma’s OS2 optical stabilization algorithm provides up to 7.5 stops of image stabilization
making the lens more well-suited for handheld usage
and giving users the luxury of shooting at slower shutter speeds while maintaining image sharpness.
Two OS modes are available.
Mode 1 is for general shooting, while Mode 2 features Sigma’s Intelligent OS algorithm and is ideal for panning shots and sports capturing.

Additional Benefits
Aperture ring with click and lock switches
Tripod socket to distribute weight evenly
Carbon fiber-reinforced plastic lens hood
6 Custom Switches
AFL button
Focus mode switch
Focus limiter switch
OS switch
Custom mode switch
Aperture ring click switch

• EF-Mount Lens/Full-Frame Format
• Aperture Range: f/1.4 to f/16
• Three FLD Elements, Two SLD Elements
• One Aspherical Element
• Super Multi-Layer Coating
• Hyper Sonic AF Motor, Manual Override
• Weather-Sealed, Protective Front Coating
• Rounded 9-Blade Diaphragm
• Removable Rotating Arca-Type Tripod Foot
• Compatible with Sigma USB Dock

• Full-Frame | f/1.4 to f/16
• Designed for Astrophotography
• HLA Autofocus Motor
• TS-141 Tripod Socket

• Six F Low Dispersion (FLD) and two Special Low Dispersion (SLD) elements markedly reduce chromatic aberrations
  and color fringing throughout the zoom range for improved clarity and color accuracy.
• Three aspherical elements control spherical aberrations and distortion for increased sharpness and accurate rendering.
• Super Multi-Layer and Nano Porous Coatings have been applied to lens elements in order to minimize lens flare
  and ghosting and contribute to producing contrast-rich and color-neutral imagery, even in backlit conditions.