Expressive power meets optical excellence
A true all-round optic that is ideal for portrait, wedding, street, landscape and family photography. Improving on the already impressive 50mm F1.4 DG OS HSM lens for DSLR cameras, the SIGMA 50mm F1.4 DG DN for mirrorless delivers exceptional expressive performance to help photographers achieve striking and characterful images in remarkable detail. With the fast HLA (High-response Liner Actuator) motor, fast, quiet and precise AF can be achieved for both stills and video, with creative bokeh thanks to the exceptional F1.4 aperture.
Perfect for portraits and low-light photography
A fast prime lens that boasts an ultra-wide aperture of F1.4, making it ideal for low-light photography such as concerts, interiors and weddings. It also delivers a very shallow depth-of-field for background blur, which is perfect for creating stand-out portraits. The bokeh is smooth and attractive, and thanks to the lens’ 11 diaphragm blades, the out-of-focus highlights are nicely rounded, even when working wide-open at F1.4.
Outstanding optical performance
Thanks to improvements in optical design technology, the SIGMA 50mm F1.4 DG DN delivers sharp results across the entire frame, particularly towards the periphery. The lens is constructed of 14 elements in 11 groups, including one SLD (Special Low Dispersion) element and three aspherical elements which delivers significant improvements to controlling sagittal coma flare and effectively suppressing various aberrations such as astigmatism and field curvature, which cannot be corrected digitally.
Ultra-fast AF motor for stills and video
Never miss focus with the outstanding HLA (High-response Linear Actuator) autofocus motor. It ensures fast, accurate and near-silent focusing, and despite the lens’ ultra-wide aperture, exceptionally fast-tracking performance. Due to the redesigned motor, the lens includes a single double-sided aspherical element as the focusing lens that can be rapidly moved by the HLA motor.
Compact, robust design
The combination of redesigned optics and the HLA motor allowed the lens to be designed from the ground up, reducing the weight and improving the lens construction. With a dust- and splash-resistant structure, a rubber seal around the mount, and a water- and oil-repellent coating on the front-element, the 50mm F1.4 DG DN | Art is suitable for use in difficult shooting conditions. The outer barrel is constructed of TSC (Thermally Stable Composite), which has a similar thermal expansion rate to aluminium. This means the metal inner barrel and the TSC outer barrel behave in a similar way as temperatures change, ensuring a consistent performance in all environments. Both materials are very light, with the lens weighing just 670g (L-Mount version).
Advanced feature-set designed for professional use
The lens barrel is equipped with a range of useful functions. As well as a manual aperture ring, the lens has an Aperture Ring Click switch, which allows users to switch between stepped, third-stop aperture increments and a smooth, click-free action. This is particularly useful for videographers who may want to use the aperture to adjust exposure seamlessly while filming. The aperture ring can be locked with the lock switch.
A customisable AFL button found on the side of the lens barrel can be customised to perform a range of different functions (depending on camera model). It also features a Focus Mode switch, a rubberised focus ring with a smooth, fluid-like movement, and a robust, petal-type lens hood with lock button. The hood also has a rubberised grip for easy attachment and removal. For L-Mount users, the 50mm F1.4 DG DN | Art can be connected to Sigma’s USB Dock for customisation and adjustment, including switching between linear and non-linear focus ring movement.
Impression
Elliot Aubin
Etsuko Aimu
Maike Wittreck
Stewart Weir
Other features
● Lens construction: 14 elements in 11 groups (1 SLD and 3 aspherical lenses)
● Inner focus system
● Compatible with high-speed autofocus
● HLA (High-response Linear Actuator)
● Compatible with Lens Aberration Correction
* Function available on supported cameras only. Available corrections and auto correction functionality may vary depending on the camera model.
* On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, please set all aberration correction functions to ‘ON’ (AUTO).
● Support for DMF, AF + MF
● Compatible with AF assist (Sony E-mount only)
● Super Multi-Layer Coating
● Water and Oil Repellent Coating (front element)
● AFL button
* Only on compatible cameras. Available functions may vary depending on the camera used.
● Focus Mode switch
● Support for switching between linear and non-linear focus ring settings (L-Mount only)
● Aperture ring
● Aperture ring click switch
● Aperture ring lock switch
● Dust and Splash Resistant Structure
● Petal Type Hood with lock (LH782-02)
● Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
● Designed to minimize flare and ghosting
● Every single lens undergoes SIGMA’s proprietary MTF measuring system
● 11-blade rounded diaphragm
● High-precision, durable brass bayonet mount
● “Made in Japan” craftsmanship
Essentials
You'll find our philosophy and craftsmanship in every product
Our lens line-up fully expresses our approach to lenses and photography itself. All of our lenses belong to one of three lines—Contemporary, Art or Sports—all of which share our development philosophy and advanced manufacturing system. High performance, high quality and high end in every respect, these lenses give people who love photography lasting value and consistent, exciting results. The secret is our passion for craftsmanship that we put into every production process and every product.
Evaluation with Sigma's own MTF measuring system “A1”
We used to measure lens performance with MTF measuring system using conventional sensors. However, we’ve now developed our own proprietary MTF (modulation transfer function) measuring system (A1) using 46-megapixel Foveon direct image sensors. Even previously undetectable high-frequency details are now within the scope of our quality control inspections.
* A1: Aizu1
“Made in Japan”
All Sigma’s manufacturing – right down to moulds and parts – with a few exceptions, are carried out under a single integrated production system, entirely in Japan. We are now one of the very few manufacturers whose products are solely “made in Japan”. We like to think our products are somehow imbued with the essence of our homeland, blessed as it is with clean air and water, and focused, hard-working people. We pride ourselves on the authentic quality of Sigma products, born of a marriage between highly attuned expertise and intelligent, advanced technology. Our sophisticated products have satisfied professionals and lovers of photography all over the world because our manufacturing is based on genuine craftsmanship, underpinned by the passion and pride of our experts.
Applicable for the Mount Conversion Service
As an experienced lens manufacturer that has been creating a diverse range of interchangeable lenses, we have started the innovative chargeable service “Mount Conversion Service”. With this service, the mount of your current SIGMA lenses can be changed to another mount of your choice. It gives a new life to your favourite lenses when you wish to use it on a different camera body.
* This “Mount Conversion Service” is different from a normal repair. In order to apply for the service, please contact your nearest authorised subsidiary/distributor of SIGMA.
Lens construction
Weather Resistant Sealing
Specifications
| Angle-of-view | 46.8° | |
| Lens Construction | 14 elements, 11 groups (1 SLD and 3 aspherical elements) | |
| Number of Diaphragm Blades | 11 Blades (Rounded diaphragm) | |
| Minimum Aperture | F16 | |
| Minimum Focusing Distance | 45cm | |
| Maximum Magnification | 1:6.8 | |
| Filter Size | 72mm | |
| Dimensions | 78.2mm x 109.5mm | |
| Weight | 670g | |
Corresponding AF Mounts
Mount |
Barcode No. |
| L-Mount | 00-85126-315696 |
| Sony E-mount | 00-85126-315658 |
Expressive power meets optical excellence
Diffraction and Geometrical MTF Charts
50mm F1.4 DG DN | A
Expressive power meets optical excellence
Accessories | 72mm Filter Thread
Front Lens Cap
Protect the front element of your lens with a SIGMA Rear Lens Cap. Helps to prevent dust, scratches and unwanted damage. Supplied with new SIGMA Global Vision lenses* *Excluding some lens variants.
£5.99 – £14.99
LH782-02 Lens Hood for 50mm F1.4 DG DN | Art
Dedicated lens hood for SIGMA 50mm F1.4 DG DN | Art.
£39.99
Protector Filter
Introducing a new range of SIGMA filters to suit the new “SGV” (Sigma Global Vision) range of high optical performance lenses. Four new lines that incorporate a design that is conscious of optical quality that compliments the design build of the SGV range; Sigma Protector, Sigma WR Protector, Sigma WR UV Filter and the Sigma …
£18.99 – £119.99
Rear Lens Cap
Protect the rear elements of your lens with a SIGMA Rear Lens Cap. Helps to prevent dust, scratches and unwanted damage to the lens contacts. Supplied with new SIGMA Global Vision lenses* *Excluding some lens variants.
£4.99
Sigma USB Dock UD-11
Designed exclusively for the use with a SIGMA Contemporary, Art, or Sports lens and its accessories, the SIGMA USB DOCK allows users to update firmware and customize settings on lenses in these lineups. As the latest addition to the lineup, the USB DOCK UD-11 is designed for two types of mirrorless camera mounts: the L-Mount …
£59.99
WR Ceramic Protector
Go Back Give your valued lenses the care they deserve with the true protector. Interchangeable lenses are the most important element of photographic expression, and to the photographer they are a valuable personal asset. To help photographers continue to use for many years the lens systems in which they have invested their time, knowledge, and …
£69.99 – £219.99
WR CPL Filter
Go Back Introducing a new range of SIGMA filters to suit the new “SGV” (Sigma Global Vision) range of high optical performance lenses. Four new lines that incorporate a design that is conscious of optical quality that compliments the design build of the SGV range; Sigma Protector, Sigma WR Protector, Sigma WR UV Filter and …
£44.99 – £199.99
WR Protector
Go Back Introducing a new range of SIGMA filters to suit the new “SGV” (Sigma Global Vision) range of high optical performance lenses. Four new lines that incorporate a design that is conscious of optical quality that compliments the design build of the SGV range; Sigma Protector, Sigma WR Protector, Sigma WR UV Filter and …
£26.99 – £149.99
WR UV Filter
Go Back Introducing a new range of SIGMA filters to suit the new “SGV” (Sigma Global Vision) range of high optical performance lenses. Four new lines that incorporate a design that is conscious of optical quality that compliments the design build of the SGV range; Sigma Protector, Sigma WR Protector, Sigma WR UV Filter and …
£29.99 – £159.99
Expressive power meets optical excellence