The optical design of the Sigma Contemporary 28-70mm f/2.8 DG DN is based on the ART 24-70mm f/2.8 DG DN, which is renowned for its outstanding optical performance throughout its zoom range. True to the Contemporary line's core concept, the Contemporary 28-70mm f/2.8 DG DN 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 Contemporary 28-70mm f/2.8 DG DN has an advanced optical design that includes three aspherical, two FLD, and two SLD elements. Despite using fewer elements in total than the ART 24-70mm f/2.8 DG DN, 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.

Supplied accessories: Front Cap - Rear lens Cap - Lens Hood (LH706-01)