| Attribute | Value |
|---|---|
| Lens Construction | 14 elements in 12 groups, including 4 aspherical and 2 SLD elements |
| Diameter | 74 mm |
| Zoom System | Rotary with lock |
| Diagonal Angle of View | 34.30 - 75.40 degree |
| Aperture | 2.80 - 22.00 f |
| Notes | Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax |
| Filter Size | 67 mm |
| Magnification Ratio | 0.23 x |
| Closest Focus | 0.33 m |
| Length | 87.2 mm |
| Diaphragm Blades | 9 |
| APS Equivalent | 1.5x: 42 - 105mm; 1.6x: 44.8 - 112mm |
| Focal Length | 28.00 - 70.00 mm |
| Image Circle | 35mm |
| Brand | Sigma |
| Name | Sigma 28-70mm f/2.8 EX DG |
| Weight | 510 g |
| Type | Standard Zoom |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Diaphragm Blades Type | Add |
| Front Element Rotation | Add |
| Focus Details | Add |