This is a wide-angle prime lens for APS-C-format Sony E-mount mirrorless cameras. It gives a 24mm equivalent focal length and has a maximum aperture of f/1.4. The bright aperture suits low-light shooting and gives more control over depth of field for selective focus.
The optical design uses two SLD elements, three FLD elements and two aspherical elements. These reduce color fringing, chromatic aberrations, distortion and spherical aberrations. A Super Multi-Layer Coating on the elements minimizes flare and ghosting, including in backlit conditions. A rounded nine-blade diaphragm contributes to a smooth bokeh quality.
A stepping AF motor provides fast, precise and near-silent focusing for both stills and video. The bayonet mount is made of brass, and rubber sealing in the mount makes it dust- and splash-resistant. The lens is part of Sigma's Contemporary line and has a compact, lightweight build.
- Mount
- Sony E-mount
- Format
- APS-C
- Focal length
- 16mm (24mm 35mm equivalent)
- Aperture
- f/1.4 to f/16
- Elements
- 2 SLD, 3 FLD, 2 aspherical
- Coating
- Super Multi-Layer Coating
- Autofocus
- Stepping motor AF system
- Diaphragm
- Rounded 9-blade
- Mount material
- Brass bayonet mount
- Weather sealing
- Rubber-sealed mount; dust- and splash-resistant