contemporary
28-70mm F2.8 DG DN
Available mounts
- Smallest and lightest lens in its class
- Uniformly sharp from the center to the edges
- Thorough correction of aberrations
- Super Multi-Layer Coating and Nano Porous Coating
- Water and oil repellant front coating
- Responsive and near-silent stepping focus motor
- Mount with dust and splash resistant structure
- TSC (Thermally Stable Composite) construction
- Rounded 9-blade diaphragm
- Compatible with Lens Aberration Correction*
- Made in Japan
SPECIFICATIONS
FEATURES
LENS CONSTRUCTION / MTF
TECHNOLOGY
Tele: 1:4.6
Sony E-mount：φ72.2mm×103.5mm / χ2.8in.×4.1in.
Sony E-mount：470g / 16.6oz.
The three-digit code on the surface of the lens is to indicate the year the lens was first released. (Since it is different from the year of manufacture, the release year and edition number may not match depending on the mount.)
Sony E-mount：00-85126-59265-3
*This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.
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Lens construction
FLD glass SLD glass Aspherical lens -
MTF Chart
The MTF (Modulation Transfer Function) is one of the measurements for evaluating a lens’ performance, and it shows how faithfully the contrast of the subject can be reproduced on the image plane. The horizontal axis shows the image height (distance from the center of the image in mm) and the vertical axis shows the contrast value (maximum value is 1).
The closer the 10 line pairs/mm curve is to 1, the higher the contrast and clarity of the lens is, and similarly, the closer the 30 line pairs/mm curve is to 1, the better the resolution and sharpness of the lens is.*The MTF chart depicts the result at the wide-open aperture.
*For mirrorless lenses that support distortion correction, the horizontal axis shows the image height equivalent to when an L-Mount lens is attached to a Sigma L-Mount camera with distortion correction applied. (The effect of distortion correction may differ depending on the mount and camera used.)
*The spatial frequency indicates the variation on the image plane before distortion correction is performed. -
Spatial frequency
S: Sagittal Line
M: Meridional Line
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10lp/mm
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30lp/mm
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Diffraction MTF
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Geometrical MTF
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Additional Geometrical MTF
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Reference chart
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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... 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...
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A 28–70mm lens with no compromise on optical performance or portability
Focal length / F value : 28-70mm F2.8
Lens construction : 16 elements in 12 groups...
Filter size : φ67mm
470g*1, φ72.2mm×101.5mm
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A pro-use lens with highest levels of performance throughout its focal range starting at 24mm at the wide-angle side
Focal length / F value : 24-70mm F2.8
Lens construction : 19 elements in 15 groups...
Filter size : φ82mm
835g*1, φ87.8mm×122.9mm
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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...
...perfect combination for filmmakers looking for a high-performance, lightweight, easy-to-handle camera system that works well with a gimbal and other accessories.
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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...
The Sigma 28-70mm F2.8 DG DN | Contemporary offers a new and improved photographic experience for mirrorless users...
Smart and nimble.
The new standard mirrorless zoom.
Sigma sets a new standard in large-aperture mirrorless zoom lenses
The Sigma 28-70mm F2.8 DG DN | Contemporary redefines the standard zoom for mirrorless cameras by combining outstanding optical performance, an F2.8 constant aperture, and a lightweight and compact body. The design of the 28-70mm F2.8 DG DN | Contemporary is based on the existing 24-70mm F2.8 DG DN | Art, but with a focal range starting at 28mm, making the lens body significantly smaller and lighter while maintaining superb optical performance. It is the smallest and lightest lens in its class*. Remaining true to the Contemporary line’s core concept of maintaining an optimal balance between optical performance and lens size, this new optic delivers professional quality results in a body small enough to take on a casual outing.
In addition to prioritizing portability, Sigma’s optical engineers introduced a new combination of coatings and structural elements that make this standard zoom well-equipped for use in a wide range of shooting environments. Likewise, the latest production and manufacturing techniques were employed to ensure exceptionally high build quality.
The 28-70mm F2.8 DG DN | Contemporary introduces another fast, high-performance, large-aperture zoom lens to Sigma’s mirrorless line-up, offering a more compact alternative to the existing 24-70mm F2.8 DG DN | Art.
* As a standard zoom lens for full-frame mirrorless cameras with F2.8 brightness throughout the zoom range (Source: Sigma, as of February 2021)
