Sigma 24-70mm f/2.8 DG DN ART - Review / Test Report
Lens Reviews - Sony Alpha (Full Format)

Review by Klaus Schroiff, published November 2020


Fast standard zoom lenses are incredibly popular in the photographic community - yet the surrounding design challenges in this lens class are about as tough as they get. To date, we haven't reviewed a single lens of this type that was truly outstanding (on high megapixel cameras). However, that doesn't mean that they are trying. One of the latest contenders is the Sigma 24-70mm f/2.8 DG DN ART. Sigma wasn't OVERLY successful with their previous attempts so let's see whether there's progress in the mirrorless world. The lens is available both in Sony E and L-mount. One of the easy wins compared to the Sony FE 24-70mm f/2.8 GM is, of course, its price tag. The Sigma is available for around 1100USD/EUR vs 2000USD/1800EUR for the Sony lens.

We have always been a big fan of the mechanical quality of Sigma lenses ever since they introduced the ART/Sports series of lenses - and the Sigma 24-70mm f/2.8 DG DN ART is no exception. The lens body is made of a combination of metal and Sigma's own TSC (Thermally Stable Composite). ART lenses are targeting professional photographers thus the design is both dust- and splash-proof. The front element also has a water- and oil-repellent coating. On the downside, the lens extends towards the long end of the zoom range - although that's a fate shared by all lenses in this class. Both the broad zoom ring as well as the smaller focus ring operate smoothly. A petal-shaped lens hood is supplied.

The Sigma 24-70mm f/2.8 DG DN ART uses a noiseless stepping motor for auto-focusing. The AF speed is good although it doesn't reach the levels of the Sony 24-70mm f/2.8GM. Manual focusing works "by wire". This works reasonably well in real-life situations although we have seen more precise implementations.

Optical construction19 elements in 15 groups inc. 6x FLD, 2x SLD & 3x aspherical elements
Number of aperture blades11 (rounded)
min. focus distance0.18-0.38m (max. magnification ratio 1:2.9-1:4.5)
Filter size82mm
Hoodpetal-shaped (bayonet mount, supplied)
Other featuresdust- and splash-proof, focus lock button, transport lock