The Sigma 50mm f/1.2 DG DN Art Lens for Sony E is a landmark prime lens that combines exceptional brightness with a surprisingly lightweight build — the lightest full-frame 50mm f/1.2 in its class. Driven by Sigma’s dual HLA (High-Response Linear Actuator) motors, it delivers whisper-quiet, high-speed autofocus, making it an ideal everyday companion for portrait, street, and documentary photographers shooting on Sony E-mount cameras.
Built around 17 elements in 12 groups — including four aspherical elements and high refractive index glass — the Sigma Art 50mm f/1.2 DG DN produces strikingly sharp images with silky, circular bokeh courtesy of its pioneering 13-blade rounded diaphragm. A super multilayer coating minimises ghosting and flare, while the dust- and splash-resistant construction with a water- and oil-repellent front element ensures reliable performance in demanding shooting environments.
Key features
- Blazing f/1.2 Maximum Aperture: Capture stunning detail in low light and achieve beautifully separated subjects with an extremely wide f/1.2 aperture — the brightest lens in Sigma’s 50mm Art lineup.
- Unprecedented 13-Blade Rounded Diaphragm: A first for Sigma, this rounded 13-blade diaphragm maintains a near-perfect circular shape even when stopped down, producing exceptionally smooth and round bokeh across the full aperture range.
- Dual HLA Autofocus Motors: Two High-Response Linear Actuator motors deliver fast, silent, and precise autofocus performance — fully compatible with AF Assist functions on supported Sony E-mount bodies.
- Advanced Optical Design: Four aspherical lens elements and high refractive index glass within a 17-element, 12-group construction ensure edge-to-edge sharpness and superior aberration control on full-frame sensors.
- Durable, Weather-Resistant Build: Dust- and splash-resistant construction combined with a water- and oil-repellent front coating keeps this lens performing reliably in challenging outdoor conditions.
- Versatile Aperture Ring Controls: A lockable, de-clickable aperture ring with a customisable AFL button gives photographers precise on-lens control, ideal for both stills and cinema workflows.
Specifications
| Mount | Sony E |
|---|---|
| Format Compatibility | Full-Frame |
| Focal Length | 50mm |
| Maximum Aperture | f/1.2 |
| Minimum Aperture | f/16 |
| Diaphragm Blades | 13 (Rounded) |
| Lens Construction | 17 Elements in 12 Groups, 4 Aspherical Elements |
| Autofocus System | Dual HLA (High-Response Linear Actuator) Motors |
| Weather Sealing | Dust- and Splash-Resistant |
| Weight | 1.6 lb |
Frequently asked questions
Is the Sigma 50mm f/1.2 DG DN Art compatible with full-frame Sony E-mount cameras?
Yes, the Sigma 50mm f/1.2 DG DN Art is designed specifically for the Sony E-mount and covers a full-frame image circle, making it fully compatible with full-frame Sony Alpha cameras such as the A7 and A9 series, as well as APS-C E-mount bodies.
How good is the bokeh on the Sigma 50mm f/1.2 DG DN Art?
The bokeh is exceptional. The lens features a 13-blade rounded diaphragm — a first for Sigma — which maintains a circular aperture shape even when stopped down, producing smooth, round, and creamy bokeh that enhances portraits and artistic compositions at any aperture setting.
Does the Sigma 50mm f/1.2 DG DN Art have weather sealing?
Yes. The lens features a dust- and splash-resistant construction throughout its body, and the front lens element is treated with a water- and oil-repellent coating, making it reliable for use in light rain, dusty environments, and other challenging field conditions.
