The ultra-wide-angle zoom 16-28mm F2.8 DG DN expands the Sigma Contemporary series. The full-frame lens with a constant max. aperture of F2.8 is compact and lightly built as typical for the series with a weight of just 450g and a length of 100.6mm (L-mount). In addition to the L-mount, the Sony E-mount is also served.
Sigma 16-28mm F2,8 DG DN | Contemporary with Sony A7c |
Sigma 16-28mm F2,8 DG DN | Contemporary with Sony A7c
The lens construction uses specially selected, exceptionally lightweight materials, including TSC (Thermally Stable Composite), a polycarbonate with thermal expansion similar to aluminum. The optical design includes 16 lenses in 11 groups, including four aspheres and five FLD lenses, whose material has the properties of fluorite glass. Imaging errors are said to be minimal despite the pronounced focal length, and image field curvature is also largely corrected. A Super Multi Layer Coating (SML) reduces stray light and ghosting so that no lens flares occur.
A fast and silent stepper motor, according to Sigma, is used for focusing. The minimum focusing distance is 25cm. When zooming, the center of gravity of the optics should hardly shift, which is an advantage in gimbal setups, for example. The aperture consists of 9 blades.
The Sigma 16-28mm F2.8 DG DN | Contemporary will be offered for 899 euros, probably starting at the end of June.