Sigma announces the 28-70mm F2.8 DG DN
Image courtesy: Sigma

The latest entry in Sigma’s Art line is the 28-70mm F2.8 DG DN. Its design takes inspiration from Sigma’s 24-70mm F2.8 DG DN lens. Though, it has a wider focal length and is much lighter.

The Sigma 28-70mm F2.8 DG DN Art lens is the lightest and smallest lens in its class, according to Sigma. “At time of release, it is the smallest and lightest full-frame F2.8 standard zoom for mirrorless systems,” Sigma states. Its compact and lightweight design makes the lens great for everyday use and travel. In total, the lens weighs just 16.6 ounces. So, it’s easy to carry around with you as you go about your day.

How is the Sigma 28-70mm Art lens so light?

Sigma’s 28-70mm Art lens achieves its lightness thanks to its much simpler dust and splash-proof structure. Additionally, it features smaller switches and houses only one light focusing element. This allows Sigma to keep the AF unit smaller than other lenses in the Art line.

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Build material plays a role as well. Instead of metal, Sigma utilized a polycarbonate, TSC (Thermally Stable Composite) when constructing the lens.

Sigma 28-70mm F2.8 DG DN
Image courtesy: Sigma

Sigma 28-70mm Art lens’s optical performance

Though the Sigma 28-70mm Art lens is lighter and smaller than the rest of the Art lenses, Sigma says customers will still receive Art-level optical performance with sharpness throughout the focal range. The lens features sixteen elements in twelve groups, with three aspherical, two FLD, and two SLD elements. Also, it has nine-aperture blades.

How is the urability

The 28-70mm Art lens is a standard travel lens. It needs some protection against the elements. As stated above, the lens is both dust and splash-proof. It also features a water and oil repellent coating on its front lens. Additionally, it features Super Multi-Layer Coating and Nanoporous Coating to control flaring in backlit shooting environments.

Breakdown

  • Internal focusing
  • Stepping motor
  • Nanoporous coating
  • Super multi-layer coating
  • Water and oil-repellent coating on the front element of the Sigma 28-70mm Art lens
  • Focus mode switch
  • Support DM, AF+MF
  • Petal-type lens hood
  • Dust and splash-proof
  • 9-blade rounded diaphragm

Pricing and availability

The 28-70mm F2.8 DG DN will be out on March 12, 2021 for $899. It’s available for both Sony E- and Lecia L-mount.


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