Sigma has announced their latest lens for Sony full-frame E-Mount and this time it’s the 28-70mm F2.8 DG DN Contemporary lens.
At the time of writing it is the smallest and lightest constant F2.8 standard zoom lens on the market for full-frame mirrorless cameras. Weighing in at just 470g, which is roughly 43% lighter than their existing 24-70mm F2.8 DG DN Art lens. It has also been designed by the same engineer who designed the 24-70mm F2.8 DG DN Art lens.
The lens body features a AF/MF switch and has a 67mm filter thread. There is no stabilization built into the lens itself, but this shouldn’t be too much of an issue if your camera has in-built body stabilization (IBIS).
The 28-70mm F2.8 DG DN | C has an advanced optical design that includes three aspherical, two FLD, and twoSLD elements. The anti-ghosting design and use of Super Multi-Layer Coating and Nano Porous Coating controls flare for high-contrast results in backlit conditions. It also features a water and oil-repellent coating on the front side of the lens.
In order to fit with the design concept of the Contemporary line, which balances performance with portability, the new lens features a simpler dust-and splash-proof structure and smaller switches.
The lens features just one lightweight focusing element, which helps to keeps the AF unit small. This, along with a quiet and fast stepping motor, makes for responsive and near-silent autofocus performance.
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The body of the Sigma 28-70mm F2.8 DG DN | C is built from a polycarbonate called TSC (Thermal Stable Composite), which has a comparable level of thermal shrinkage to aluminium. This helps reduce differences between the thermal shrinkage of the metal and non-metal parts, ensuring stable levels of performance even in an environment with extreme temperature changes.
Key Specs
| Name: | Sigma 28-70mm F2.8 DG DN |
| Mount: | Sony E-Mount + L-Mount |
| Focal Length: | 28-70 |
| Maximum Aperture: | F2.8 |
| Minimum Aperture: | F22 |
| Lens Construction: | 12 groups, 16 elements (2 FLD, 2 SLD and 3 aspherical elements) |
| Angle of View (Full-Frame): | 75.4°–34.3° |
| Maximum Magnification Ratio: | 1:3.3 (W) – 1:4.6 (T) |
| Aperture Blades: | 9 (rounded diaphragm) |
| Minimum Focussing Distance: | 19 cm at wide-end, 38cm a telephoto-end |
| Filter Size: | 67mm |
| Lens Size: | 72.2mm x 101.5mm (L-Mount) |
| Weight: | 470g / 16.58 oz. (L-Mount) |
Early Reviews
Here’s a collection of early reviews from the free samples that Sigma sent out. Note that these are influencer reviews and not actual buyer reviews.
Christopher Frost
DPReview
Gordon Laing
Pav SZ
The 28-70 F2.8 DG DN lens will be available in Sony E-Mount and L-Mount from Friday 12 March priced at $899.00 / £759.99 / €849.00.
Further details are available on Sigma’s website.
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