|Lens type||Zoom lens|
|Max Format size||35mm FF|
|Focal length||28–70 mm|
|Lens mount||L-Mount, Sony FE|
|Number of diaphragm blades||9|
|Special elements / coatings||2 FLD + 2 SLD + 3 aspherical elements, Nano Porous + Super Multi-Layer coating|
|Minimum focus||0.19 m (7.48″)|
|Motor type||Stepper motor|
|Full time manual||Yes|
|Weight||470 g (1.04 lb)|
|Diameter||72 mm (2.83″)|
|Length||102 mm (4.02″)|
|Zoom method||Rotary (extending)|
|Filter thread||67 mm|
The Sigma 28-70mm F2.8 DG DN Contemporary is a fast standard zoom lens for full-frame L- and E-mount bodies. The lens sports three aspherical, two ‘FLD’ and two ‘SLD’ elements, as well as Super-Multi Layer and Nano Porous coatings to reduce ghosting and aberrations.
It has a minimum focus distance of 19cm (7.5″) and a maximum magnification of 0.3X.
The 28-70mm F2.8 is weather-sealed, and has an oil and water repellant coating on the front element.