Sigma's smallest ever ultra-wide-angle zoom /
Sigma’s award winning 16-28mm F2.8 is an ultra-wide-angle, wide-aperture zoom for full-frame mirrorless cameras. Combining outstanding optical performance with a constant F2.8 aperture, the lens is perfect for landscape, wedding, interior and architectural photography. Weighing in at 450g and measuring just 100.6mm in length, the lens is exceptionally portable, so is an attractive option for photographers wanting to travel light without compromising on optical quality.
Optimised with the latest optical design technology, the 16-28mm is a high-performance optic that delivers exceptional sharpness across the frame with very little in the way of unwanted aberrations. An internal zoom mechanism keeps the overall length of the lens consistent throughout the entire zoom range, so that the lens’ centre of gravity stays fairly constant. This is perfect for gimbal use as it would not need adjusting when the focal length is changed. A filter thread around the front element makes attaching filters easy.
The quality of this lens was recognised at the TIPA Awards and the AP Awards in 2023, where it won the Best Wide-Angle Zoom Lens and the Wide-Angle Zoom Lens of the Year awards respectively.
Features and build /
The exterior barrel of the 16-28mm is constructed using a polymer called Thermally Stable Composite (TSC). This has a similar thermal expansion rate to aluminium, meaning that the metal interior of the lens and the TSC exterior behave in the same way as temperatures change. TSC is also light and strong, and has a sleek finish for a premium look.
The SIGMA 16-28mm has both an internal zoom mechanism and an internal focus mechanism, so the lens always remains the same length. This makes it well suited to gimbal use due to a relatively constant centre of gravity, and it also means the end of the lens doesn’t rotate when focusing – important when using filters.
The lens has a stepping motor that delivers smooth, fast and accurate AF for both stills and video. It has been designed with lighter glass elements in the focus lens group, which ensures responsive autofocus that is fully compatible with all the latest AF camera technology.
The durable brass mount is surrounded by a rubber seal to help keep out dust and moisture.
High-performance optics /
Despite weighing only 450g, the 16-28mm F2.8 DG DN delivers outstanding optical quality even on very high-resolution sensors. Optical performance is maintained across the whole frame, meaning fine detail is rendered perfectly right into the corners.
The lens has an advanced optical design made up of 16 elements in 11 groups, including 4 aspherical elements and 5 FLD elements. These ensure razor-sharp results and work with in-camera digital corrections to eliminate chromatic aberration, flare, distortion and vignetting.
The lens has advanced optical coatings which reduce flare and ghosting when working in bright direct sunlight – very important on an ultra-wide-angle lens.
| Lens construction |
16 elements in 11 groups |
| Angle of view |
107.0°-75.4° |
| Number of diaphragm blades |
9 (rounded diaphragm) |
| Minimum aperture |
F22 |
| Minimum focusing distance |
25cm |
| Maximum magnification ratio |
1:5.6 |
| Filter thread |
72mm |
| Dimensions (diameter x length) |
ø77.2mm × 100.6mm |
| Weight |
450g |
| Corresponding AF mounts |
L-Mount | Sony E |
Specifications are for L-Mount
