The Sigma 50-120mm F2.8 DC OS | Contemporary is a telephoto zoom lens for APS-C mirrorless cameras. Its focal length range is equivalent to approximately 75-180mm in 35mm terms. It has a constant F2.8 aperture, which supports low-light shooting and gives soft background blur.
The optical design has 18 elements in 13 groups, including special low-dispersion (SLD) and aspherical elements. These minimize optical aberrations and keep contrast high across the zoom range. A High-response Linear Actuator (HLA) drives the autofocus for quick, precise focusing on fast-moving subjects.
The lens weighs 390 g and is 99 mm long. It has a dust- and splash-resistant structure and a water- and oil-repellent coating.
- Focal length
- 50-120mm (approx. 75-180mm in 35mm equivalent)
- Aperture
- Constant F2.8
- Mount type
- APS-C mirrorless cameras
- Lens construction
- 18 elements in 13 groups, including SLD and aspherical elements
- Autofocus
- High-response Linear Actuator (HLA)
- Weather protection
- Dust- and splash-resistant structure; water- and oil-repellent coating
- Length
- 99 mm
- Weight
- 390 g