Outstanding optical performance in a compact body
The optical design of the SIGMA 28-70mm F2.8 DG DN | Contemporary is largely based on the 24-70mm F2.8 DG DN | Art, which is renowned for its outstanding optical performance throughout its zoom range.
True to the Contemporary line’s core concept, the 28-70mm F2.8 DG DN was developed to offer the right balance of performance and portability. It has been designed to deliver outstanding image quality that rivals SIGMA’s Art line lenses in a body light enough for day-to-day use.
Building on state-of-the-art technology, the 28-70mm F2.8 DG DN | C has an advanced design that includes three aspherical, two FLD, and two SLD elements. Despite using fewer elements in total than the 24-70mm F2.8 DG DN | A, the design results in a thorough correction of axial chromatic aberration and sagittal coma aberration, which cannot be corrected in-camera, allowing users to create images that are uniformly sharp from the centre to the edges of the frame.
Light and small enough for casual outings, this large-aperture, standard zoom will open up new photographic possibilities for better and more creative results.
Controlled results with little flare or ghosting
Along with its anti-ghosting design, the use of Super Multi-Layer Coating and Nano Porous Coating means well-controlled flare for high-contrast results in backlit conditions. It also features a water and oil-repellent coating on the front side of the lens.
Exceptional sharpness across the whole frame
The lens is ultra-sharp throughout the aperture range and across the whole frame. This detail of a tree from the edge of the image on the left demonstrates the exceptional level of detail this lens is able to resolve. There is also no chromatic aberration visible.
A lightweight and compact body perfect for day-to-day use
Being slightly less wide-angle than the 24-70mm F2.8 DG DN | Art has allowed a significant reduction in the size of the body of the 28-70mm F2.8 DG DN | Contemporary (see right). In order to fit with the design concept of the Contemporary line, which balances performance with portability, the new lens features a simpler dust- and splash-proof structure and smaller switches. At the time of release this makes it the smallest and lightest standard zoom with a constant F2.8 aperture for full-frame mirrorless cameras.
The lens features just one lightweight focusing element, which keeps the AF unit small. This, along with a quiet and fast stepping motor, makes for responsive and near-silent autofocus performance.
The 28-70mm F2.8 DG DN | C weighs in at 470g, and when attached to the SIGMA fp, the entire setup is 890g. The supreme portability afforded by a camera system that weighs less than 1kg gives photographers a huge amount of freedom and flexibility to achieve their creative vision. It’s also a perfect combination for film-makers looking for a high-performance, lightweight, easy-to-handle system that works well with a gimbal.
Superb build quality for an exceptional user experience
Sigma is now one of the very few imaging manufacturers whose products are solely made in Japan ④. This gives us full control over our production processes and helps us maintain the highest levels of quality control over the design, manufacture and construction of every product. Great care is taken to ensure the highest quality materials are chosen.
With priority given to optimal portability, the body of the SIGMA 28-70mm F2.8 DG DN | C consists primarily of lightweight parts. While conventional wisdom states that it is more difficult to ensure processing accuracy for plastic parts than metal parts, there has been no compromise whatsoever with the build quality of this lens.
One reason for this is that it uses a type of polycarbonate called TSC (Thermal Stable Composite) ③, which has a comparable level of thermal shrinkage to aluminium. This helps reduce differences between the thermal shrinkage of the metal and non-metal parts, ensuring stable levels of performance even in an environment with extreme temperature changes. The use of polycarbonates in the construction of zoom and focus rings can make their operation feel less premium, but with careful treatment to the precision of these parts and in the lubricant technology that has been employed, the rings offer a precise action with an exceptionally high-quality feel.
What allows us to achieve these precisely produced parts and such premium aesthetics is the impressive standard of manufacturing technology and rigorous quality control we have at the SIGMA Aizu Factory.
The lens comes with an AF/MF switch ②, which has a firm but ergonomic action, and the focus and zoom rings ① are smooth and precise owing to SIGMA’s advanced lubricant technologies.
The lens’ premium, intuitive build makes it as exciting to use the lens as it is to see the incredible images it can produce, inspiring you to start achieving your creative potential.
Short focusing distance for capturing close-up details
A minimum focusing distance of 19cm at the wide end of the zoom range (a working distance of 6.9cm) up to 38cm fully zoomed in allows you to capture subjects close-up in incredible detail.
This gives a maximum magnification ratio of 1:3.3 and makes the lens ideal for shooting flowers, textures and products.
This image of a tiny ice formation shot on the 28-70mm F2.8 DG DN | Contemporary demonstrates the lens’s impressive ability to capture macro-style details without the need to close-up filters or macro rings.
Light but tough polycarbonate petal hood included
Included in the box is a petal-style lens hood (LH706-01) that will help to reduce flare and ghosting when shooting into the sun or other bright source of light. Its tough but ultra-light polycarbonate design can also help protect the lens from damage if dropped.
- Lens construction: 16 elements in 12 groups, with 2 FLD, 2 SLD and 3 aspherical elements
- Internal focusing
- Compatible with high-speed autofocus
- Stepping motor
- Compatible with lens-based optical correction
*Function available on supported cameras only. Available corrections may vary depending on the camera model.
- Nano Porous Coating
- Super Multi-Layer Coating
- Water and oil repellent coating (front element)
- Focus Mode Switch
- Support DMF, AF+MF
- Minimum shooting distance 19 cm at wide end with a working distance 6.9cm
- Petal-type lens hood
- Simple dust- and splash-proof design
- Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)
- Designed to minimise flare and ghosting
- Every single lens undergoes SIGMA’s proprietary MTF measuring system ‘A1’
- 9-blade rounded diaphragm
- High-precision, durable brass bayonet mount
- ‘Made in Japan’ craftsmanship
To learn more about SIGMA’s craftsmanship, please visit sigma-global.com/en/lenses
You'll find our philosophy and craftsmanship in every product
Our new lineup 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. 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 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 authorized subsidiary/distributor of SIGMA.
Smart and nimble. The new standard mirrorless zoom.
28-70mm F2.8 DG DN
|Lens Construction||16 elements in 12 groups|
|Angle of View (35mm)||
75.4° – 34.3°
|Number of Diaphragm Blades||9 Blades (Rounded diaphragm)|
|Minimum Focusing Distance||19cm (W) – 38cm (T)|
|Maximum Magnification||1:3.3 (W) – 1:4.6 (T)|
|Filter Size||Diameter 67mm|
|Dimensions||72.2mm × 101.5mm|
Corresponding AF Mounts
Smart and nimble. The new standard mirrorless zoom.
Diffraction and Geometrical MTF Chart - 28-70mm F2.8 DG DN
Smart and nimble. The new standard mirrorless zoom.
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.
Lens Hood for 28-70mm F2.8 DG DN | C (LH706-01)
The Lens Hood LH706-01 is designed specifically for the SIGMA 28-70mm F2.8 DG DN | Contemporary. The hood will help protect the front element of the lens whilst also reducing lens flare. Supplied in box with the SIGMA 28-70mm F2.8 DG DN | Contemporary.
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.
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 …