Sigma's Art-line 12-24mm f/4 — the widest rectilinear zoom for full-frame with premium optics.
The Sigma 12-24mm f/4 DG HSM Art was released in 2016 as the Art-series extreme ultra-wide zoom for full-frame cameras, providing the widest zoom range in the Art lineup. The bulbous front element prevents filter attachment — only a rear gelatin filter slot is provided. The fixed petal-shaped front hood is integral. At 1,150g it is the heaviest Art-series zoom. HSM provides fast, quiet AF. Available in Canon EF and Nikon F versions.
The optical design uses 16 elements in 11 groups. Nine rounded aperture blades. No front filter thread — the bulbous front element is fixed with integral petal hood. At 1,150g the lens is substantial. Minimum focus distance of 0.24m. HSM motor provides fast, quiet AF with full-time manual override. f/4 maximum aperture. DG confirms full-frame coverage.
The 12-24mm Art is the go-to rectilinear ultra-wide zoom for full-frame: at 12mm, the rectilinear rendering covers astrophotography Milky Way compositions, interiors, and environmental landscape shots that require the widest possible straight-line rendering without fisheye distortion. The 0.24m MFD at the wide end enables dramatic foreground-background environmental compositions at extreme wide angles. Art-tier correction targets minimum coma and astigmatism at f/4.
On the used market the Sigma 12-24mm f/4 DG HSM Art is available at mid-range Art-series ultra-wide pricing. Condition checks: HSM AF motor response, front element for marks — no filter protection on the fixed bulbous front — and zoom ring smoothness. Confirm the mount version — Canon EF and Nikon F are both available. Compatible with full-frame and APS-C bodies in the specified mount.