Sigma has just officially announced the new Sigma 28-45mm F1.8 DG DN Art lens for Sony E and Leica L mounts. It is the world’s-first f/1.8 zoom for full-frame cameras. This groundbreaking new lens acts as a full-frame spiritual successor to Sigma’s wildly popular 18-35mm f/1.8 DC HSM Art lens for APS-C SLRs. Like its iconic predecessor, the 28-45mm f/1.8 DG DN offers the flexibility of a zoom with the speed of a prime.
This new lens costs $1,349, first available for pre-order at B&H/ Adorama.

Below are the detailed specifications of Sigma 28-45mm F1.8 DG DN Art lens:
| Principal specifications | ||
|---|---|---|
| Lens type | Zoom lens | |
| Max Format size | 35mm FF | |
| Focal length | 28–45 mm | |
| Image stabilization | No | |
| Lens mount | L-Mount, Sony E, Sony FE | |
| Aperture | ||
| Maximum aperture | F1.8 | |
| Minimum aperture | F16 | |
| Aperture ring | Yes | |
| Number of diaphragm blades | 11 | |
| Optics | ||
| Elements | 18 | |
| Groups | 15 | |
| Special elements / coatings | 3 aspherical, 5 SLD | |
| Focus | ||
| Minimum focus | 0.30 m (11.81″) | |
| Maximum magnification | 0.25× | |
| Motor type | Linear Motor | |
| Full time manual | Yes | |
| Focus method | Internal | |
| Distance scale | No | |
| DoF scale | No | |
| Physical | ||
| Weight | 960 g (2.12 lb) | |
| Diameter | 88 mm (3.46″) | |
| Length | 151 mm (5.96″) | |
| Sealing | Yes | |
| Zoom method | Rotary (internal) | |
| Zoom lock | Yes | |
| Filter thread | 82 mm | |
| Hood supplied | Yes | |
| Tripod collar | No | |
