Sigma 2.8/28-70 E-mount used #9162215

Sigma 28-70mm f2.8 DG DN © for Sony-E

The SIGMA 28-70mm F2.8 DG DN Contemporary redefines the standard Zoom lens for mirrorless cameras: it combines outstanding optical performance and a continuous aperture of F2.8 with a lightweight and compact body.

In terms of design, the 28-70mm F2.8 DG DN Contemporary is based on the 24-70mm F2.8 DG DN Art, but with a focal length range from 28mm. This makes the lens housing significantly smaller and lighter, with the same outstanding optical performance.

Lightweight and compact housing

Due to the slightly smaller wide-angle range of the 28-70mm F2.8 DG DN Contemporary compared to the 28-70mm, the size of the 28-70mm housing has been significantly reduced. The concept of the Contemporary product line balances performance and handiness

. The lens has a single, lightweight focusing element, so that the AF unit can also be kept small. Together with a quiet and fast stepping motor, this ensures responsive and virtually silent autofocus performance.

The 28-70mm F2.8 DG DN Contemporary weighs 470g on its own and just 890g together with the lens. At less than 1kg, such an outstandingly light camera system gives photographers an enormous amount of freedom and flexibility to realize their creative visions. It is also a perfect choice for filmmakers looking for a powerful, lightweight and easy-to-handle camera system that also works well with a gimbal and other accessories.

The genes of the Art product line

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 known for its outstanding optical performance over the entire focal length range. The 28-70mm F2.8 DG DN Contemporary follows the core concept of the Contemporary product line: it has been designed to offer the right balance of performance and handiness. In a body that is light enough for everyday use, this fast standard Zoom lens thus delivers outstanding image quality to rival the lenses in the Art product line.

Outstanding build quality

Although it is generally accepted that it is more difficult to guarantee the processing accuracy of plastic parts than metal parts, no compromises have been made in the processing quality of the 28-70mm F2.8 DG DN Contemporary. One reason for this is the use of the special polycarbonate TSC (Thermally Stable Composite), which has a comparable thermal shrinkage to aluminum. This reduces the differences in thermal shrinkage between metallic and non-metallic components, ensuring consistent performance even under extreme temperature fluctuations. The use of polycarbonates in the construction of Zoom and focus rings can make them appear less premium in practice. However, when these parts are carefully machined for precision and appropriately adjusted in motion with lubricant, the rings offer precise mechanics with an exceptionally high-quality feel.

Highest optical performance

The 28-70mm F2.8 DG DN Contemporary uses state-of-the-art technology and features a modern optical design that includes three aspherical, two FLD and two SLD elements.

Despite the lower total number of elements than the 24-70mm F2.8 DG DN Art, the design still provides extensive correction of longitudinal chromatic aberrations and sagittal coma that cannot be corrected by the camera. This allows users to create images that are consistently sharp from the center to the edge of the shot. In addition to the anti-ghosting design, the Super Multi-Layer and Nano Porous coatings ensure well-controlled stray light formation and therefore high-contrast results even in backlit conditions. The front lens of the lens has a water and oil-repellent coating.

The everyday companion

The SIGMA 28-70mm F2.8 DG DN Contemporary offers photographers with a mirrorless camera who require a fast standard Zoom lens an enhanced photographic experience. Its high-quality, intuitive construction makes the lens as exciting to use as the incredible images it can produce - inspiring you to realize its creative potential.

High-quality coating

An ideal lens directs the incident light through all the lenses and onto the sensor. If, on the other hand, some of the light is reflected by individual lenses, not only is the light yield reduced; the reflections within the lens create ghost images and flare spots or reduce the contrast.

To prevent this, the 28-70mm F2.8 DG DN Contemporary uses a Super Multi-Layer Coating (SML) and a Nano Porous Coating, which reduce stray light and ghost images. The result is clear, sharp and high-contrast images without annoying lens flares.