Sigma Contemporary 28-70mm F2.8 DG DN - L-Mount

About: Sigma Contemporary 28-70mm F2.8 DG DN - L-Mount

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.

• 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

SPECIFICATIONS

• Lens Construction -   12 groups, 16 elements (2 FLD elements, 2 SLD elements, 3 aspherical elements)
• Angle of View -  75.4°~34.3°
• Number of Diaphragm Blades -  9 (Rounded diaphragm)
• Minimum Aperture -  F22-29
• Minimum Focusing Distance -  19-38cm / 7.5–15in.
• Maximum Magnification Ratio -  1:3.3 (W) - 1:4.6 (T)
• Filter size -  φ67mm
• Dimensions (Diameter × Length) -  φ72.2mm×101.5mm / φ2.8in.×4.0in.
• Weight -  470g / 16.6oz.
• Edition Number -  C021
• Supplied Accessories -  Lens Hood (LH706-01) supplied.