Sigma's professional Art-series standard zoom for full-frame DSLRs with OS stabilisation.
The Sigma 24-70mm f/2.8 DG OS HSM Art was released in 2017 as part of Sigma's Art-series professional zoom lineup, applying the Art optical standard to the constant f/2.8 professional standard zoom for Canon EF and Nikon F full-frame bodies. OS (Optical Stabiliser) distinguishes it from the Canon EF 24-70mm f/2.8L II USM and Nikon AF-S 24-70mm f/2.8G ED, neither of which includes optical stabilisation. The Art designation indicates Sigma's highest optical quality tier for the DG (full-frame) lineup.
The optical design uses 19 elements in 14 groups. Nine rounded aperture blades produce smooth bokeh. The 82mm filter thread is the standard for professional f/2.8 standard zooms. At 1,020g the lens is substantial — heavier than the Canon EF 24-70mm f/2.8L II USM (~805g) and the Nikon AF-S 24-70mm f/2.8G ED (~900g). Minimum focus distance of 0.37m. OS provides optical stabilisation. HSM motor provides fast, quiet AF. Constant f/2.8 aperture throughout.
The OS stabilisation is the Art 24-70mm's practical differentiation from brand-native professional zooms: optical stabilisation in a 24-70mm f/2.8 enables handheld video at slower shutter speeds and improves still image sharpness in marginal light where 1/70s is not achievable. At 1,020g the Art 24-70mm is the heaviest option in the professional standard zoom category — the weight premium over the Canon L is the trade-off for the OS mechanism.
On the used market the Sigma 24-70mm f/2.8 DG OS HSM Art is available at moderate prices for a professional constant-aperture zoom. Condition checks: OS engagement, HSM AF response, zoom ring smoothness, and 82mm front element for marks. Confirm the mount version — Canon EF and Nikon F versions are both available and not interchangeable. Compatible with full-frame and APS-C bodies in the specified mount.