| Attribute | Value |
|---|---|
| Diaphragm Blades | 6 |
| Diameter | 71 mm |
| Diagonal Angle of View | 94.00 degree |
| Aperture | 2.80 - 22.00 f |
| Filter Size | 72 mm |
| Magnification Ratio | 0.14 x |
| Closest Focus | 0.25 m |
| Focus Details | Inner focusing; full-time manual focus and USM |
| Lens Construction | 11 elements in 9 groups |
| Length | 77 mm |
| APS Equivalent | 32mm |
| Focal Length | 20.00 mm |
| Image Circle | 35mm |
| Brand | Canon |
| Name | Canon EF 20mm f/2.8 USM |
| Weight | 405 g |
| Type | Wide Prime |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Zoom System | Add |
| Diaphragm Blades Type | Add |
| Notes | Add |
| Front Element Rotation | Add |