50mm F1.4 DG HSM

Design detail

Incredible resolution ideal for the high-megapixel era. Introducing the new benchmark large-aperture standard lens

In 2008, Sigma released a large diameter standard lens designed for digital SLRs, “SIGMA 50mm F1.4 EX DG HSM”. At that time, products for film cameras were prevalent, yet we spent enormous effort to set a new benchmark for the 50mm lens that optimizes the characteristics of digital cameras, such as compensating peripheral brightness, controlling the point images in the corners, and improving the image drawing, not only around the focusing point, but also other areas in the image.

Art line delivers high-level artistic expression

In recent years, as the DSLR evolves, development of image sensors for higher pixel size has created the photographers’ desire for the lenses with superior performance. In 2012, Sigma has announced the “Art” line that achieves unsurpassed expressive performance to fulfill the higher requirement of photographers. The first lens from the “Art” line “SIGMA 35mm F1.4 DG HSM [A012]” sought for uncompromising performance, and it resulted in great reviews as well as a lot of awards from all over the world. Based on the accumulated wisdom and know-how to establish the standard for our “Art” line series, we are proud to announce the development of the new high performance standard lens with a large diameter for this new era of superb image quality.

SIGMA is organizing all its interchangeable lenses into three product lines; Contemporary, Art, and Sports, where each line has a distinctive concept. Designed with a focus on sophisticated optical performance and abundant expressive power, our Art line delivers high-level artistic expression. With the astonishing rendering performance that meets the high standard, along with landscapes, portraits still-life, close-up, and casual snaps, they are perfect for the kind of photography that unleashes the inner artist. Ideal for studio photography, they offer just as much expressive scope when capturing architecture and starry skies and many other scenes.

Astonishing rendering performance

Utilizing know-how and the latest design technology accumulated through the past developments, it corrects the aberration thoroughly and achieves high resolution and astonishing rendering performance even near the edge of the image.

Achieving both high resolution and beautiful bokeh

While pursuing a high level of resolution on the focused point, bokeh in front and behind the point of focus is carefully maintained to have soft rendering. Aberrations including sagittal coma flare and color distortion that affect the image quality are thoroughly corrected. From open aperture, high-definition rendering without blur is achieved. Moreover, by ensuring vignetting at the minimum and preventing color blur around the front and back of the focus point, it also achieves natural bokeh.

Excellent correction of sagittal coma flare

It is ideal for a wide aperture standard lens to have a high rendering performance from open aperture throughout the entire image. For instance, the molded glass aspherical lens elements provide excellent correction to sagittal coma flare. It is perfect for astronomical photography and shooting of illumination because of the reduced blur on the point light sources near the edge of the image. It also creates an attractive bokeh in portraits and indoor shooting.

Correction of axial chromatic aberration

For axial chromatic aberration that is hard to correct even during the image processing, SLD (Special Low Dispersion) glass elements are incorporated, ensuring high image quality throughout the entire focusing range. The lens achieves sharp and high contrast image rendering.

Minimized distortion

It is not possible to compensate for distortion just by changing the aperture values. Thus, the lens development stage was vital in ensuring minimized distortion. The “SIGMA 50mm F1.4 DG HSM” has positioned each glass element to optimize the power layout at respective positions, and succeeded in minimizing distortion.

Rich peripheral brightness

It secures very rich brightness in the peripheral areas, which can be a common problem for a lens with a large diameter. By positioning wide elements in the front group, it has improved the efficiency at large apertures. Since it is capable of minimizing vignetting, very clear depiction across the image is ensured.

Designed to minimize flare and ghosting

Flare and ghosting were thoroughly measured and monitored from the lens development stage to establish an optical design which is resistant to strong incidental light such as backlight. The Super Multi-Layer Coating reduces flare and ghosting and provides sharp and high contrast images even in backlit conditions.

Minimum focusing distance of 40cm

The lens incorporates a floating system that adjusts the distance between lens groups while focusing, thereby reducing the amount of lens movement required. This achieves a minimum focusing distance of 40cm and maximum magnification ratio of 1:5.6. As there is less variation in aberration at different shooting distances, the lens delivers high rendering performance throughout the entire focusing range.

Hyper Sonic Motor ensures High AF Speed

The HSM (Hyper Sonic Motor) ensures a silent, high-speed AF function. Optimizing AF algorithm, smoother AF is achieved. Also, this lens can offer full-time MF function by rotating the focus ring of the lens while auto focusing. Without changing the AF/MF Focus Mode Switch, it allows faster focus adjustment. * The default setting of Full-time MF function varies for each mount.

New Additional function added to “SIGMA USB DOCK(optional)”

With the optional SIGMA USB DOCK, you can update your lens firmware, adjust focus points and customize the setting of Full-time MF function and the timing to operate the Full-time MF function. By attaching this lens to a SIGMA USB DOCK, which is connected to a computer, the dedicated software “SIGMA Optimization Pro” offers various types of customization and adjustment

* It is necessary to update the “SIGMA Optimization Pro” to Ver. 1.2.
* Please keep the SIGMA USB DOCK updated to the latest version.

Incorporating Rounded Diaphragm

The 9 blade-rounded diaphragm creates an attractive blur to the out-of-focus areas of the image.

Design Concept

With the new product lines, supplied hoods incorporate rubber for the connected part. Lens caps and AF/MF switches are also newly designed in order to improve usability. For the parts inside, metals and a new material called TSC (Thermally Stable Composite), which works well with metals, are located to achieve products with high accuracy. The lens barrel includes the year of release, engraved for users to recognize when the lens was released.

Brass made bayonet mount

This lens incorporates a brass made bayonet mount which has both high accuracy and durability. A special treatment to reinforce its strength is applied to the surface giving it greater strength and making it highly resistant to long-term use.

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. The SIGMA 50mm F1.4 DG HSM will all be checked using this “A1” before they are shipped.

* A1: Aizu1

“Made in Japan”

All Sigma’s manufacturing – right down to molds 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 favorite 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 authorized subsidiary / distributor of SIGMA.

Incredible resolution ideal for the high-megapixel era. Introducing the new benchmark large-aperture standard lens

Lens construction



50mm F1.4 DG HSM

Lens Construction 13 Elements in 8 Groups
Angle of View (for SD1) 46.8 degrees
Number of Diaphragm Blades 9 Blades
Minimum Aperture F16
Minimum Focusing Distance 40cm / 15.8in.
Maximum Magnification 1:5.6
Filter Size Diameter 77mm
Dimensions Diameter 85.4mm x Length 99.9mm / 3.4in. x 3.9in.
Weight 815g / 28.7oz.

The appearance and specifications are subject to change without a notice.

Corresponding AF Mounts

Barcode No.

Sigma 00-85126-311568
Canon 00-85126-311544
Nikon 00-85126-311551
Sony A-Mount 00-85126-311629
Sony E-Mount 00-85126-311650
L-Mount TBA

Incredible resolution ideal for the high-megapixel era. Introducing the new benchmark large-aperture standard lens

Diffraction MTF


Geometrical MTF






Incredible resolution ideal for the high-megapixel era. Introducing the new benchmark large-aperture standard lens

In the news

‘The only surprise with the Sigma 50mm f/1.4 DG HSM | A is just how good it is. Having compared its test results to other 50mm lenses we’ve tested in the past, the Sigma 50mm f/1.4 performs better in all areas and in every respect. At its centre, it’s sharper than lenses such as the older Carl Zeiss Planar T* 50mm f/1.4. The lens looks lovely and handles just as well, but it is on its image quality that it should be judged and it’s in this criteria that it excels. If you have the money and fancy one of the very best 50mm primes that money can buy, you won’t be left disappointed.’

‘So why on earth, you might ask, has this lens earned PP’s Approved award? Because it’s awesome, that’s why. Image quality is way, way ahead of any other lenses in test, especially wide-open, with no chromatic aberration and pin-sharp corners even at the widest aperture setting. In terms of build quality the Sigma 50mm is second to none, with an all-metal body and mount, a large rubberised focus ring and a focus distance window.’

‘The Sigma is a sharp lens with none of the chromatic aberration that afflicts rivals when shot wide-open. It might be a large and heavy lens, but it provides an unrivalled image quality. It’s also modestly priced when compared to its rivals, making it a very desirable lens choice.’

‘The lens is a unique design that breaks away from the traditional configuration of a 50mm f/1.4 lens, a bold move that pays off in image quality. … The images it produces display a staggering amount of detail across the frame, and those shooting landscapes and travel images will be impressed with its edge-to-edge sharpness…The lens looks lovely and handles just as well, but it is on its image quality that it should be judged and here I find it exceptional!’

‘This lens delivers exceptional sharpness and contrast, even at its widest f/1.4 aperture. Despite this, defocused areas look wonderfully creamy, and the transitional regions between focused and defocused areas follow a particularly smooth progression. There’s practically no distortion and overall image quality is simply stunning. With class-topping sharpness and control over distortion, image quality from this lens is absolutely stunning.’

‘Contrast is exceptional, even when using the widest aperture under very gloomy lighting, breathing life into low-light portraits. Handling is excellent and all attributes of image quality are simply superb. Bokeh is deliciously smooth and creamy. For owners of APS-C format cameras, this is simply the best portrait lens on the market. It reigns supreme for build quality, handling and image quality.’

‘What sets this lens apart from all others in the group is that levels of sharpness remain astonishing even at the widest aperture of f/1.4, right across the whole image frame from corner to corner. Not just one of the best Sigma lenses we’ve seen, but one of the best lenses we’ve tested in recent years, the 50mm f/1.4 DG HSM | A is simply unbeatable on Canon, Nikon and Sony bodies. It works brilliantly as a standard prime on full-frame bodies, and as a portrait lens on APS-C format cameras.’

‘Sigma’s Art series range of lenses has a reputation built on merit as some of the best glass available. The 50mm f1.4 DG HSM Art may be the most expensive ‘nifty fifty’ in this round-up but it puts in an unrivalled optical performance. This lens is easily larger and heavier than anything else featured, but with a high-quality matte finish it does feel premium. A top-quality optic for those that demand the best performance possible, it’s shipped with a hood and soft carry case.’

Incredible resolution ideal for the high-megapixel era. Introducing the new benchmark large-aperture standard lens


Sigma Lens Cap

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.

Item No.


Lens Hood for 50mm F1.4 DG HSM | Art (LH830-02)

Item No. 3117Z6


Padded Case for 50mm F1.4 DG HSM Art

Item No. CS0359


Padded Case for 50mm F1.4 DG HSM Art- Sony E fitting only

Item No. CS0347


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.

Item No.


Sigma USB Dock UD-01

SIGMA USB DOCK enables photographers to update the lens firmware and adjust parameters such as focus. It is designed for use with the New Contemporary, Art and Sports product lines. The adjustment is processed with special software (SIGMA Optimization Pro). The AF speed, focus limiter and OS function are also customizable for Sports lenses. Requires …

Item No.


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 …

Item No.