The size of this optic is incredible, a world first for a full frame F2.8 constant zoom of this focal length. It beats the existing Tamron rival, and weighs just 16.6 ounces. Half the weight of the DG DN ART version.
To illustrate just how small it is, here it is on the Sigma Fp!
Here’s what Sigma have to say about the new zoom:
- At time of release, it is the smallest and lightest full-frame F2.8 standard zoom for mirrorless systems.
- Available in Sony E-Mount and L-Mount for L-mount cameras from SIGMA, Leica, and PanasonicÂ
- Compact and lightweight, perfect for everyday use and travel.
- At just 16.6 ounces, it is almost a pound lighter than the 24-70mm F2.8 DG DN | Art lens (31.4 ounces).
- Fast maximum aperture of F2.8, providing consistent low-light capability from 28mm to 70mm.
- SIGMAÂ Art-level optical performance, with incredible sharpness throughout the focal range.
- Gorgeous bokeh rendering that softly blurs the background and brings your subjects to life thanks to both the nine-blade rounded aperture and optical formula.
- Lens offers excellent edge-to-edge performance with well-controlled axial chromatic aberration and sagittal coma aberration.
- Dust and splash-proof mount with water and oil-repellent front element coatings.
- Working distance of approx. 2.8 inches (7cm) at 1:3.3 magnification at 28mm for close-ups and casual macro opportunities.
- SIGMA’s Contemporary line strikes an excellent balance of both superb image quality and day-to-day usability.
- Stepping motor for swift, accurate, quiet autofocus for both still and video.  Compatible with AF-C for eye-detect AF and real-time tracking.
- Made in Japan
The lens will be available for $899 beginning March 12th!
