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.
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.
|Name:||Sigma 28-70mm F2.8 DG DN|
|Mount:||Sony E-Mount + L-Mount|
|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|
|Lens Size:||72.2mm x 101.5mm (L-Mount)|
|Weight:||470g / 16.58 oz. (L-Mount)|
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.
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.