| Attribute | Value |
|---|---|
| Focus Details | Internal focus with stepping motor; AF/MF switch; Supports DMF, AF+MF on Sony cameras |
| Diameter | 72.2 mm |
| Zoom System | Rotary |
| Diagonal Angle of View | 34.30 - 75.40 degree |
| Diaphragm Blades Type | rounded |
| Aperture | 2.80 - 22.00 f |
| Notes | Available AF Mounts: L-Mount, E-Mount; Dust- and splash-proof at lens mount |
| Filter Size | 67 mm |
| Magnification Ratio | 4.6 x |
| Closest Focus | 0.19 m |
| Length | 101.5 mm |
| Lens Construction | 16 elements in 12 groups, including 2 FLD, 2 SLD and 3 aspherical elements; Super Multi-Layer Coating, Nano Porous Coating. |
| Diaphragm Blades | 9 |
| APS Equivalent | 42 - 105mm |
| Focal Length | 28.00 - 70.00 mm |
| Image Circle | 35mm |
| Brand | Sigma |
| Name | Sigma 28-70mm f/2.8 DG DN Contemporary |
| Weight | 470 g |
| Type | Standard Zoom |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Front Element Rotation | Add |