Does this standard zoom succeed at offering top-level performance for today’s era of high-resolution cameras? Michael Topham finds out
Sigma 24-70mm f/2.8 DG OS HSM Art review: Build & Handling
The lens has a clean, practical design – something we’ve come to associate with Sigma’s Art-series lenses. From distance it could be mistaken for the Sigma 24-105mm f/4 DG OS HSM, but in terms of size it’s fractionally thinner and slightly stubbier.
Though some will be disappointed that it’s not a weather-sealed optic, Sigma has made the barrel robust enough that it should stand up to challenging shooting environments that serious photographers encounter.
The barrel contains a large amount of metal in its construction and external moving parts feature thermally stable composite (TSC), which is resistant to thermal expansion and contraction. At the rear there’s a rubber ring that compresses against the camera mount to form an effective seal against dust and moisture. The front element also features a water and oil-repellent coating that allows it to be wiped clean easily.
In terms of weight it’s heavier than its Canon, Tamron and Sony rivals, but is 50g lighter than Nikon’s offering. As with most lenses that weigh over 1kg, it handles best with cameras that offer a large, comfortable handgrip and benefits from support in the palm of your left hand.
A fairly thin manual focus ring is positioned in front of the focus distance window. Ahead of this is the zoom ring that has its focal length markings printed towards the front. Both the zoom and focus rings are rubberised and it’s easy enough to decipher which is which from behind the camera. The feedback of both rings on our review sample was excellent. The manual focus ring provides sufficient resistance for precise focusing adjustments and the zoom ring operates consistently smoothly and requires little effort to extend it to its maximum reach.
There are two switches to be found on the side of the barrel. Setting the AF/MF switch to its central position engages manual override (MO) and the optical stabilisation is set to on or off using the switch below.