The Sigma 24-70mm f/2.8 DG DN II | Art is a standard zoom lens with a constant f/2.8 maximum aperture. It succeeds the previous 24-70mm f/2.8 DG DN | Art and has improved resolving power across the zoom range. It is about 7% smaller and 10% lighter than that model. The lens is designed to stay sharp across the image from the maximum aperture, even on high-resolution cameras.
The optical design uses 6 FLD elements, 2 SLD elements and 5 aspherical elements to suppress aberrations throughout the zoom range. Nano Porous Coating and Super Multi-layer Coating help reduce flare and ghosting. The lens is also designed to minimize focus breathing, so the angle of view changes little during focus pulls in video.
Autofocus is driven by an HLA (High-response Linear Actuator) motor. The lens has an aperture ring with a click switch and a lock switch. It also has two AFL buttons, one on the side and one on top for vertical shooting. On selected cameras, functions can be assigned to the buttons through the camera menu. The zoom extension unit and other parts are metal, and the internal structure is built for rigidity.
- Focal length
- 24-70mm
- Maximum aperture
- f/2.8
- Optical elements
- 6 FLD glass, 2 SLD glass, 5 aspherical
- Coatings
- Nano Porous Coating, Super Multi-layer Coating
- Autofocus
- HLA (High-response Linear Actuator)
- Min. focus distance
- 17cm / 6.7in. at the wide end
- Max. magnification
- 1:2.7
- Controls
- Aperture ring, aperture ring click switch, aperture ring lock switch, 2 AFL buttons
- Max. diameter
- 87.8mm / 3.5in.
- Length
- 120.2mm / 4.7in.