28-70mm F2.8 DG DN | C

SMART AND NIMBLE. THE NEW STANDARD MIRRORLESS ZOOM
Lenses, Standard Lenses, Multi-purpose Lenses
Contemporary
Creative, Travel, Wedding & Events, Portrait, Family
  • Internal focusing
  • Superb build quality
  • Focus Mode Switch
  • Nano Porous Coating
  • Lightweight and compact body 
  • Simple dust- and splash-proof desig
  • Uncompromised optical performance
  • Water and oil repellent coating (front element)
  • High-precision, durable brass bayonet mount
  • Designed to minimize flare and ghosting
  • ‘Made in Japan’ craftsmanship
#C2870DGDN
Price: CA$1,249.95

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Price: CA$1,249.95
*Authorized dealer prices may vary
Overview
1.      Design based on SIGMA’s Art line, with the same uncompromising optical performance

The optical design of the SIGMA 28-70mm F2.8 DG DN | Contemporary is 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 | Contemporary was developed to offer the right balance of performance and portability, and as such, this large-aperture standard zoom delivers outstanding image quality that rivals 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 | Contemporary has an advanced optical 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 | Art, 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 center to the edges of the frame. 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 repellant coating on the front side of the lens.

In short, the SIGMA 28-70mm F2.8 DG DN | Contemporary combines all of the key optical features required of a large-aperture standard zoom lens, which are essential for photographing a wide variety of subjects in a range of shooting conditions.

Comparison of the two optimal solutions to standard zoom lenses with F2.8 brightness throughout the zoom range.

With the addition of the new 28-70mm F2.8 DG DN | Contemporary, SIGMA now provides two optimal solutions of standard F2.8 zoom lens for mirrorless cameras ― the new 28-70mm F2.8 DG DN | Contemporary achieves remarkable portability and offers the same optical performance, as the existing 24-70mm F2.8 DG DN | Art which is for pro-use with the highest levels of performance throughout its focal range.

  

28-70mm / F2.8

Focal length / F value

24-70mm / F2.8

16 elements in 12 groups, with 2 FLD lens, 2 SLD lens and 3 Aspherical lenses

Lens construction

19 elements in 15 groups, with 6 FLD lens, 2 SLD lens and 3 Aspherical lenses

19-38cm, 1:3.3(W) - 1:4.6(T)

Minimum focusing distance, Maximum magnification ratio

18-38cm, 1:2.9(W) - 1:4.5(T)

Super Multi-Layer Coating, Nano Porous Coating, Water and oil repellent coating

Coating

Super Multi-Layer Coating, Nano Porous Coating, Water  and oil repellent coating

Focus Mode Switch

Mechanism

Focus Mode Switch, AFL button, Zoom Lock Switch

Dust and splash proof structure

(Applied to the mount only)

Dust and splash proof

Dust and splash proof structure

Petal-type lens hood

Hood

Petal-type lens hood with lock

φ67mm

Filter size

φ82mm

470g, φ72.2mm×101.5mm

※for L-Mount

Weight, Dimension

(diameter x length)

835g, φ87.8mm×122.9mm

※for L-Mount

  

2.        A lightweight and compact body ideal 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 28-70mm F2.8 DG DN | Contemporary lens body. 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. This makes it the smallest and lightest lens in its class*.

The new 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 | Contemporary 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 filmmakers looking for a high-performance, lightweight, easy-to-handle camera system that works well with a gimbal and other accessories.

A large-aperture, standard zoom lens that is light and small enough for casual outings, the 28-70mm F2.8 DG DN | Contemporary will open up new photographic possibilities for better and more creative results.

* As a standard zoom lens for full-frame mirrorless cameras with F2.8 brightness throughout the zoom range (Source: SIGMA, as of February 2021)

 

3.        Superb build quality with exceptional attention to detail that provides an exceptional user experience

With priority given to optimal portability, the body of the SIGMA 28-70mm F2.8 DG DN | Contemporary 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 on build quality for the 28-70mm F2.8 DG DN | Contemporary. One reason for this is that it uses a type of polycarbonate called TSC (Thermally Stable Composite), which has a comparable level of thermal shrinkage to aluminum. 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 adjusting the movement with the lubricant appropriately, 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 SIGMA 28-70mm F2.8 DG DN | Contemporary offers a new and improved photographic experience for mirrorless users who require a fast aperture standard zoom lens. Its 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.

Tech Specs

LENS CONSTRUCTION

SPECIFICATIONS

Lens Construction 16 Elements in 12 Groups
Angle of View 75.4°-34.3°
Number of Diaphragm Blades 9 (rounded diaphragm)
Minimum Aperture F22
Minimum Focusing Distance 19 (W)-38 (T)cm / 7.5-15.0in.
Filter Size (mm) φ67mm
Maximum Magnifications 1:3.3 (W) - 1:4.6 (T)
Dimensions (Diameter x Length)

φ72.2mm×101.5mm / φ2.8-4.0in.

Weight 470g / 16.6oz.
Corresponding Mounts

Sony E-mount

Leica L-mount

 All figures calculated by L-Mount. 

* The appearance, specifications, and the like of the product are subject to change for improvement without notice.

Resources
  • FOCAL LENGTH SIMULATOR

    The focal length changes the angle of view in an image. The longer the focal length, the smaller the angle of view and the greater the magnification.

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  • SIGMA LENS TECHNOLOGY

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  • LENS TELECONVERTER COMPATIBILITY CHART

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  • MTF CHART GUIDE

    See how a lens performed using the Modulation Transfer Function (MTF) Chart Guide. The MTF is just one criterion used to evaluate lens performance.

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