Sigma 28-70mm F2.8 DG DN Contemporary Lens For Sony E-Mount - 592965

Sigma 592965 28-70mm F2.8 DG DN Contemporary Lens For Sony E-Mount

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.

Features

• Comparison of the two optimal solutions to standard zoom lenses with F2.8 brightness throughout the zoom range
  With the addition of the 28-70mm F2.8 DG DN | Contemporary, SIGMA provides two optimal solutions of standard F2.8 zoom lens for mirrorless cameras ― the 28-70mm F2.8 DG DN | Contemporary achieves remarkable portability and offers the same optical performance as the 24-70mm F2.8 DG DN | Art which is for pro-use with the highest levels of performance throughout its focal range.
• 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 lens features a simpler dust- and splash-proof structure and smaller switches. This makes it the smallest and lightest lens in its class*.
• 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.
• Contemporary Lens
  Engineered for today’s photographer who wants to do it all, our Contemporary line combines superior optical performance and compactness for high-performance lenses that cover a wide range of needs.
• DG For Digital
  Designed to deliver the ultimate in performance on full-frame digital SLRs, Sigma DG lenses also bring out the best in 35mm SLR film cameras and APS-C size DLSRs.
• DN Digital Neo
  High-performance lenses, designed exclusively for mirrorless interchangeable lens cameras.

Footnotes:

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