Gear Tech

Sigma goes light with the new 28-70mm F2.8 DG DN lens

The smallest and lightest constant f/2.8 standard zoom lens on the market for full-frame mirrorless cameras weighs just 470g…

Sigma has pulled the covers off its latest lens and this time around, the brand seems to have prioritised smaller dimensions and shedding weight as the 28-70mm F2.8 DG DN, which sits in Sigma’s Contemporary line-up is the smallest and lightest constant f/2.8 standard zoom lens on the market for full-frame mirrorless cameras. 

Available in mounts for both L-Mount cameras (Leica, Panasonic and Sigma) as well as Sony E-Mount mirrorless cameras. Tipping the scales at just 470g, which is roughly 43% lighter than Sigma’s existing 24-70mm F2.8 DG DN Art optic.

The versatile 28-70mm focal length will prove great for everything from capturing wide landscapes and architecture to portraiture at the longer end of the zoom length and thanks to the maximum aperture of f/2.8, the lens will also keep shutter speeds fast, making the lens also suitable for wedding photography, too. Pair the lens with an APS-C body and this focal length jumps to 42-105mm, further extending its versatility and creative options.

Sigma’s new 28-70mm is built around a ‘16 elements in 12 groups’ design that includes three aspherical, two FLD, and two SLD elements to improve image quality.  Sigma’s Super Multi-Layer Coating and Nano Porous Coating technology aims to control flare, which can be a challenge in high-contrast results in backlit conditions and a coating on the front element repels water and oil. What’s more, the lens uses a type of polycarbonate called TSC (Thermal Stable Composite), which has a comparable level of thermal shrinkage to aluminium. 

With a minimum focusing distance of just 19cm at the lens’ widest focal length, photographers will be able to make the most of foreground interest in the scene and the 28-70mm F2.8 DG DN is compatible with Sigma’s USB Dock, which enables users to update the lens’ firmware. What’s more, the lens supports advanced autofocus systems and a 9-blade rounded diaphragm should produce impressive bokeh.

Dust and splash proofing has been applied to the mount to boost protection from the elements and the lens ships with a petal-style hood. Expected to ship from mid-March, the Sigma 28-70mm F2.8 DG DN will carry a price-tag of $899/£759.