50-100mm F1.8 DC HSM

Design detail

Offering the highest level of image quality, this large-aperture F1.8 standard lens stimulates the desire to create

Introducing SIGMA’s second APS-C format zoom lens offering a large F1.8 aperture throughout the zoom range. A mid-tele zoom lens delivers prime lens-level image quality with a large F1.8 aperture throughout the zoom range. SIGMA was determined to create a zoom lens that offers the same brightness and resolution as a fixed focal length lens: in other words, the highest level of optical performance and expressive power. The first result of this challenge was the SIGMA 18-35mm F1.8 DC HSM | Art. In addition to fulfilling the exacting requirements of SIGMA’s Art line, this lens was the world’s first APS-C zoom for DSLRs to offer a constant F1.8 aperture value throughout the zoom range. Building on this concept, SIGMA has developed the new SIGMA 50-100mm F1.8 DC HSM | Art lens, a large-diameter mid-range telephoto zoom lens. While offering even greater brightness than a F2.8 telephoto zoom, this lens covers the focal lengths of three prime lenses in one package: 85mm F1.8, 105mm F1.8, and 135 mm F1.8 (35mm equivalent). A true game-changer, this lens is ideal for portraits with subtle bokeh effects and more, and it sets a new standard for zoom lens image quality.

Technologies that realize Art line image quality in a zoom lens

FLD glass, SLD glass, and high-refractive index, high-dispersion glass help minimize aberrations

To help minimize axial and transverse chromatic aberration, this lens features an optimal arrangement of three FLD (“F” Low Dispersion) glass elements, one SLD (Special Low Dispersion) glass element, three high-refractive index SLD glass elements, and one high-refractive index, high-dispersion glass element. By including one or more low-dispersion element in every element group, this lens ensures outstanding image quality throughout the zoom and focal range.

* FLD glass is ultra-low-dispersion glass that offers performance of the highest level. Highly transparent, its refractive index and dispersion are extremely low as compared to conventional types of glass. It offers characteristics very similar to those of fluorite, which is valued for its high anomalous dispersion. These characteristics minimize residual chromatic aberration (secondary spectrum), which cannot be corrected by ordinary optical glass, while helping to produce sharp, high-contrast images.

Designed to minimize flare and ghosting

From the start of the design process, SIGMA measured flare and ghosting to establish an optical design that is resistant to strong incidental light sources such as backlight.

Featuring a newly designed Hyper Sonic Motor

To achieve outstanding image quality and F1.8 brightness, SIGMA has enhanced its Hyper Sonic Motor (HSM). Optimizing the layout as well as the shapes of the individual parts, SIGMA has made the HSM 30 percent slimmer than before. In turn, this slimmer HSM has made possible the combination of F1.8 brightness and high image quality in a zoom lens.

Diaphragm unit designed for smooth operation

The diameter of the diaphragm is the second-largest in the SIGMA lens lineup after that of the SIGMA 200-500mm F2.8 / 400-1000mm F5.6 EX DG, necessitating smoother and quicker operation than ever before. To achieve this goal, the diaphragm blades feature Carbon Feather film, and the diaphragm unit features a new polycarbonate made with fluorine. Thanks to these innovations, diaphragm operation is exceptionally smooth even during continuous shooting, while the new polycarbonate is exceptionally durable and wear-resistant.

Outstanding zoom lens maneuverability

Inner focus and inner zoom

Since its release, the SIGMA 18-35mm F1.8 DC HSM | Art has been widely used for videography. Understanding that the SIGMA 18-35mm F1.8 DC HSM | Art and new SIGMA 50-100mm F1.8 DC HSM | Art will often be used together, SIGMA has made the style of operation the same for both lenses, including the feel of focusing and zooming. Thanks to SIGMA’s inner focus and inner zoom technologies, adjusting the focus and zoom rings does not change the length of the lens, and turning the zoom ring is not prone to cause focus shift.

Tripod socket designed for stable, comfortable operation

The tripod socket is compact, making operation more stable and comfortable during handheld photography. Parts with electro-less nickel plating help ensure the quality and durability of the 90-degree click stops and smooth switching between the horizontal and vertical position. The shape of the socket also enhances ease of handling and carrying when the lens is not attached to a camera.

Art line delivers high-level artistic expression

SIGMA is organizing all its interchangeable lenses into three product lines: Contemporary, Art, and Sports, each with a distinctive concept. Designed with a focus on sophisticated optical performance and abundant expressive power, our Art line lenses deliver high-level artistic expression. Offering astonishing rendering performance that meets the highest standard, they are perfect for landscapes, portraits, still-lifes, close-ups, and casual snaps. They are made for the kind of photography that unleashes the inner artist. A powerful ally in every genre of photography, SIGMA’s Art line lenses excel both in the studio for formal works and outdoors for impressive shots of architecture, starry skies, and many other scenes.

New SIGMA GLOBAL VISION product lines are setting new benchmarks for image quality

High-quality design features

To ensure precise operation, internal parts feature generous use of metal and Thermally Stable Composite (TSC),* which is highly compatible with metal parts. The lens barrel is engraved with the year of release for instant access to this information.

* TSC offers thermal expansion characteristics similar to those of aluminum. Parts made with TSC deform less, making lens construction of extremely high precision possible. As compared to polycarbonate containing 20% glass, a commonly used material, TSC offers approximately 70% higher elasticity. As compared to polycarbonate containing 30% glass, it offers 25% higher elasticity. (Comparison is between SIGMA-produced components.)

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. All SIGMA 50-100mm F1.8 DC HSM | Art lenses are checked using this A1 system before they are shipped.

* A1: Aizu1

Made in Japan

With only a few minor exceptions, all of SIGMA’s manufacturing, including molds and parts, takes place under a single integrated production system in Japan. We are now one of the very few manufacturers whose products are truly 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.


With the optional SIGMA USB DOCK, you can update your lens firmware and adjust the focus position and other settings. Simply connect the lens to the SIGMA USB DOCK and the dock to a computer to use the dedicated SIGMA Optimization Pro software and perform various types of customization and adjustment.

9-blade diaphragm

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

Brass made bayonet mount

The brass mount combines high precision with rugged construction. Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.

Mount Conversion Service available

An experienced lens manufacturer offering a diverse range of interchangeable lenses, SIGMA provides the innovative Mount Conversion Service, in which we change the mount of a lens in one of our new product lines to another mount of your choice (charges apply). This service can give new life to your favorite lenses when you wish to use them with a different camera body.

Corresponding AF Mounts


Vignetting will occur if the lens is used with image sensor larger than APS-C size or 35mm SLR, and APS Film SLR cameras. To find the 35 mm camera equivalent focal length, multiply the DC lens focal length by the “crop factor” (digital multiplier) of 1.5~1.7, depending on the brand of DSLR camera on which the lens will be used. The appearance and specification are subject to change without notice.

Offering the highest level of image quality, this large-aperture F1.8 standard lens stimulates the desire to create

Lens construction



50-100mm F1.8 DC HSM

Lens Construction 21 elements in 15 groups
Angle of View (for SD1) 31.7 – 16.2 degrees
Number of Diaphragm Blades 9 Blades (Rounded diaphragm)
Minimum Aperture F16
Minimum Focusing Distance 95cm / 37.4in.
Maximum Magnification 1:6.7
Filter Size Diameter 82mm
Dimensions Ø93.5mm × 170.7mm / 3.7in. × 6.7in.
Weight 1,460g / 52.6oz.

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

Corresponding AF Mounts

Barcode No.

Sigma 00-85126-693565
Canon 00-85126-693541
Nikon 00-85126-693558

Offering the highest level of image quality, this large-aperture F1.8 standard lens stimulates the desire to create

Diffraction MTF



Geometrical MTF









Offering the highest level of image quality, this large-aperture F1.8 standard lens stimulates the desire to create

In the news

‘Sometimes, you just can’t make really good glass small – and this Sigma crop format superfast zoom is built first and foremost to perform. This odd range of angles is actually a very useful one, covering from ‘short portrait’ to the classic headshot crop. After some familiarisation with the lens, it became clear that the level of detail resolved in distant scenes was exceeding expectations.’

‘It’s almost like three or four prime lenses in one (50mm, 60mm 85mm and 100mm), but with the added bonus of offering a wide f/1.8 aperture – something which you won’t find in 100mm prime lenses. Sharpness is good throughout the focal range and across apertures. Out of focus areas are rendered beautifully, while focusing is quick and accurate – and if you’re using manual focus very easy and swift too. Overall the Sigma 50-100mm F/1.8 DC HSM Art is a great lens for anybody who wants those prime lengths in a convenient all-in-one package.’

Sigma’s 50-100mm f/1.8 DC HSM | A is an outstanding lens. If you want to create attractive   background blur behind subjects at mid-telephoto lengths without having to change a lens while lugging around two or three fast primes, you’ll fall in love with it and quickly get addicted to using it at its maximum aperture. Full-frame users will be slightly jealous of this lens. Its arrival is timely, following the recent releases of the Nikon D500 and Canon EOS 80D enthusiast-focused DSLRs. It complements the also excellent Sigma 18-35mm f/1.8 APS-C-format zoom and is fittingly priced at less than £1,000. If you own an APS-C DSLR and are considering a 50mm, 85mm or 105mm prime, you’ll want to consider this zoom.

The Sigma 50-100mm f/1.8 DC HSM | Art is a highly impressive lens that offers sharp results throughout the zoom range, across the entire frame and at all apertures. This superb lens manages to pair the benefits of both zoom and prime lenses, while maintaining excellent image quality. At £829 it’s slightly pricey, but is sure to be tempting to both professionals and serious enthusiasts.’

‘With a focal range that covers many popular prime lenses and a super-fast maximum aperture, this lens is sure to appeal. For the cash, prospective buyers will get a well-built optic that can really perform when wide-open, particularly at 50mm. While its lack of image stabilisation and full-frame compatibility may deter some, it’s an ideal purchase. Overall, it’s an impressive lens that performs slickly, with image quality to match.’

Offering the highest level of image quality, this large-aperture F1.8 standard lens stimulates the desire to create


Lens Hood for 50-100mm F1.8 DC HSM Art

Item No. 6937Z9


Padded Case for 50-100mm F1.8 DC HSM Art

Item No. CS0348