- Aperture Range: f/2.8 to f/22
- 16 elements in 11 groups
- Minimum Focus Distance: 0.25m
- Rounded 9-Blade Diaphragm
- Dust and Splash-Proof Structure
- Filer Size: 72mm
- Weight: 450g

Convenient form-factor allowing more freedom and better usability
The new 16-28mm has a front filter thread built in, which allows neutral density and polarising filters to be attached more easily. This is especially useful for landscape photographers and film-makers.

The inner zoom mechanism allows the lens to maintain the same length throughout the entire zoom range and with almost no shift to its balance point. The resulting stability will be appreciated by anyone looking to use the lens with a gimbal, or for hand-held or vlog-style film-making. The inner zoom also greatly contributes to the lens'' favorable physical dimensions: at a length of 100.6mm, a diameter of 77.2mm and a weight of only 450g, its portability is comparable with wide-angle zooms with slower maximum apertures.

By using a stepping motor to control the AF actuator, the autofocus of the 16-28mm F2.8 DG DN | Contemporary is both fast and silent, making it ideal for shooting in quiet environments, such as weddings, and also for video when using an on-camera mic.

Paired with the SIGMA 28-70mm F2.8 DG DN | Contemporary, photographers are able to cover ultra-wide to medium telephoto focal lengths with only two lenses. Their combined weight of only 920g makes for an extremely versatile, compact lens system with uniform F2.8 brightness.