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Sigma 24-70mm f/2.8 DG DN ART - Review / Test Report |
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Lens Reviews -
Sony Alpha (Full Format)
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Page 1 of 3
Review by Klaus Schroiff, published November 2020
Introduction
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.
| Specifications |
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| Optical construction | 19 elements in 15 groups inc. 6x FLD, 2x SLD & 3x aspherical elements |
| Number of aperture blades | 11 (rounded) |
| min. focus distance | 0.18-0.38m (max. magnification ratio 1:2.9-1:4.5) |
| Dimensions | 87.8×124.9mm |
| Weight | 830g |
| Filter size | 82mm |
| Hood | petal-shaped (bayonet mount, supplied) |
| Other features | dust- and splash-proof, focus lock button, transport lock |
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