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Sigma 50mm F1.4 DG DN Art Lens for Mirrorless Cameras, L-Mount, Low-Light & Portrait Photography

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Key Features
- High-speed HLA Autofocus: Fast, quiet AF for stills and smooth video pulls.
- Large f/1.4 Aperture: Exceptional low-light performance and subject separation.
- 14-Element Optical Design: Sharp center-to-edge resolution, minimized aberrations.
- 11-Blade Rounded Diaphragm: Creamy, natural bokeh for portraits and product shots.
- Tactile Controls: De-clickable aperture ring with lock for filmmaking workflows.
- Weather-Resistant Build: Dust and splash resistance for reliable outdoor use.
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2 Year Extended Warranty (L)
3 Year Extended Warranty (L)
5 Year Extended Warranty (L)
Available to U.S. customers only.
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Sigma 50mm F1.4 DG DN Art Lens for Mirrorless Cameras, L-Mount, Low-Light & Portrait Photography Overview
Description
The Sigma 50 mm F1.4 DG DN | Art (A023) delivers studio-grade sharpness and creamy bokeh in a compact, mirrorless-native design. Optimized for full-frame mirrorless systems, it balances edge-to-edge resolution with a fast, cinema-friendly HLA autofocus system.
Engineered for photographers and hybrid creators, this 50mm Art prime offers an 11-blade diaphragm, weather-resistant construction, and tactile controls including a de-clickable aperture ring and aperture lock for seamless stills and video workflows.
Problem — Common Challenges
Many 50mm primes struggle with focus speed, wide-open sharpness, or bulky DSLR-era designs. Photographers need a lens that is fast, compact, consistently sharp at f/1.4, and friendly for both photo and video.
- Slow AF in low light causing missed shots.
- Wide-open softness or pronounced aberrations.
- Bulky weight and lack of tactile video controls.
Solution — What This Lens Solves
The Sigma 50 mm F1.4 DG DN | Art solves those problems by combining mirrorless-optimized optics, an HLA linear AF motor for speed and silence, an 11-blade diaphragm for pleasing bokeh, and a compact build that reduces weight without compromising durability or optical performance.
Benefits — What You Get
- Reliable Low-Light AF: Capture decisive moments in dim venues with confidence.
- Consistent Sharpness: Use wide open for portraits without sacrificing detail.
- Creative Background Separation: Smooth bokeh for professional-looking subjects.
- Hybrid-Ready Controls: De-click and lock aperture for seamless video exposure control.
Applications
- Professional portrait and headshot photography
- Wedding and event low-light shooting
- Cinematic video and run-and-gun filmmaking
Why Choose This Lens
- Art-series optical quality and cinema-friendly features at a value-driven price point.
Specifications
| Model Name / Number | 50 mm F1.4 DG DN | Art (A023) |
| Lens Type | Prime |
| Intended Use | Photography, Video |
| Color / Finish | Black |
| Weather Sealing | Yes, dust and splash resistant |
| Dimensions (Diameter Length) | 78.2 mm 109.5 mm (L-Mount) |
| Weight | 670 g (L-Mount) |
| Mount Type | L-Mount, Sony E-mount |
| Compatible Sensor Size | Full-frame |
| Supported Camera Brands / Systems | L-Mount alliance bodies, Sony E-mount full-frame mirrorless |
| Coverage | 35mm full-frame |
| Focal Length | 50 mm |
| Maximum Aperture | f/1.4 |
| Minimum Aperture | f/16 |
| Aperture Type | 11-blade, rounded |
| Optical Construction | 14 elements in 11 groups |
| Special Elements | 3 aspherical elements, 1 SLD element |
| Coatings | Water and oil repellent coating on front element |
| Focus Type | Autofocus, Manual Focus |
| Autofocus Motor Type | High-response Linear Actuator (HLA) |
| Focus Modes | AF-S, AF-C, MF |
| Minimum Focus Distance | 0.45 m / 45 cm |
| Maximum Magnification Ratio | 1:6.8 |
| Internal Focusing | Yes |
| Filter Thread Size (mm) | 72 mm |
| Front Element Rotation | No |
| Compatible Lens Hood Model | LH782-02 |
| Focus Breathing Control | Minimized, suitable for video |
| Clickless Aperture Option | Yes, de-clickable aperture ring |
| Firmware Upgradable | Yes, via Sigma USB Dock UD-11 (L-Mount) |
| Brand | Sigma Corporation |
| Manufacturer SKU | 315969 |
| UPC | 00-85126-31569-6 |
What’s included
- 1- 50mm F1.4 DG DN Art Lens, L-Mount
- 1- Lens Hood - LH782-02
- 1- Front Cap - LCF-72mm III
- 1- Rear Cap - LCR II
- 1- Lens Case
Compatibility
| FREEFLY Ember S5K | Sony BURANO | Sony ILX-LR1 | Sony NEX-VG30 | Sony PXW-FS7M2 |
| Kinefinity MAVO LF MKII | Sony BURANO CineAlta Digital Cinema Camera | Sony NEX-EA50M | Sony NEX-VG900 | Sony PXW-FX9 |
| Kinefinity MAVO S35 MKII | Sony FX3 | Sony NEX-EA50UH | Sony PXW-FS5 | Sony VENICE 6K Digital Motion Picture Camera |
| Sony FX30 | Sony FX6 | Sony NEX-FS700R | Sony NEX-FS700U | Sony PXW-FS5M2 |
| Sony PXW-FS7 |
FAQ
Is the Sigma 50 mm F1.4 DG DN compatible with Sony full-frame cameras?
Yes. The lens is available in Sony E-mount for full-frame mirrorless bodies and supports autofocus and camera features on compatible Sony cameras.
Does this lens have weather sealing?
Yes. The 50mm F1.4 DG DN | Art features dust and splash resistant construction and a water and oil repellent coating on the front element.
Can I use the aperture ring for video work?
Yes. The lens includes a de-clickable aperture ring and an aperture lock, making it suitable for smooth exposure changes during video recording.
What is the minimum focus distance and magnification?
The minimum focusing distance is 0.45 m (45 cm) with a maximum magnification ratio of 1:6.8.
Is firmware upgradable for this lens?
Yes. The L-mount version is compatible with the Sigma USB Dock UD-11 for firmware updates and focus adjustment.
How many aperture blades does the lens have?
The lens uses an 11-blade rounded diaphragm designed to produce smooth, natural bokeh.
What filter size do I need?
The filter thread size is 72 mm, compatible with commonly available 72mm filters.
How does this lens compare to older DSLR 50mm Art versions?
This DG DN design is optimized for mirrorless short flange distances, offering improved center-to-edge sharpness, smaller size, and advanced AF tailored to mirrorless bodies.
Is the autofocus suitable for video autofocus transitions?
Yes. The High-response Linear Actuator (HLA) motor provides fast, quiet autofocus suitable for smooth video transitions.
What accessories are included in the box?
The box includes a case, LH782-02 hood, front cap LCF-72mm III, and rear cap LCR II.
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