Sigma 20mm f/1.4 DG HSM | Art Lens Sony E-Mount The Sigma 20mm f/1.4 DG HSM | Art is a professional-grade wide-angle prime lens for full-frame Sony E-mount mirrorless cameras. Known for its outstanding optical performance, this fast f/1.4 prime is the ultimate tool for landscape, astrophotography, architecture, and low-light photography. As part of Sigmas acclaimed Art series, the lens is engineered for photographers and creators who demand exceptional image quality and creative versatility. Key Features Full-Frame Coverage Designed for Sony E-mount full-frame, with 30mm equivalent focal length on APS-C. Bright f/1.4 Aperture Perfect for low-light shooting and shallow depth-of-field effects. Premium Optics 15 elements in 11 groups, including: 2 FLD (F Low Dispersion) elements 5 SLD (Special Low Dispersion) elements 2 Aspherical elements Super Multi-Layer Coating Reduces flare and ghosting for contrast-rich, colour-accurate images. Hyper Sonic Motor (HSM) Fast, quiet, and smooth autofocus with full-time manual override. Rounded 9-Blade Diaphragm Creates soft, natural bokeh. Durable Construction Thermally Stable Composite (TSC) material with brass bayonet mount. Built-In Petal Lens Hood Protects the front element and reduces unwanted flare. Outstanding Optical Performance With a sophisticated optical design of 15 elements in 11 groups, the 20mm f/1.4 Art lens controls chromatic aberration, distortion, and vignetting across the frame. Edge-to-edge sharpness is maintained even at the widest aperture, making it a favourite for: Astrophotography Capture starscapes with minimal distortion and pinpoint clarity. Architecture & Interiors Achieve clean lines and reduced distortion in wide spaces. Landscapes Render expansive scenes with stunning sharpness and rich colour. The Super Multi-Layer Coating further enhances image quality by reducing flare and ghosting in backlit conditions. Fast & Reliable Autofocus The built-in Hyper Sonic Motor (HSM) delivers fast, quiet, and accurate focusing, perfect for both stills and video. Full-time manual focus override is available simply by rotating the focus ring, giving photographers total creative control when needed. Built for Professional Use Thermally Stable Composite (TSC) construction Maintains precision across temperature changes. Brass bayonet mount Ensures long-term durability and secure fit. Integrated petal-shaped hood Blocks stray light and provides extra protection. Every element of the lens is designed for reliability and professional performance, from field work to studio shoots. Specifications Lens Construction: 15 elements in 11 groups Angle of View: 94.5 Aperture Range: f/1.4 to f/16 Diaphragm Blades: 9 (rounded) Minimum Focus Distance: 27.6 cm (10.9″) Maximum Magnification Ratio: 0.14x Filter Thread: None (built-in hood) Dimensions (Diameter Length): 90.7mm 129.8mm Weight: 950g Mount: Sony E-Mount (full-frame compatible) The Sigma 20mm f/1.4 DG HSM | Art for Sony E-Mount is the ultimate wide-angle prime sharp, fast, and built for professionals who demand the best.