| Attribute | Value |
|---|---|
| Lens Construction | 6 elements in 4 groups, including 1 aspherical element |
| Diameter | 68.2 mm |
| Diagonal Angle of View | 57.00 degree |
| Diaphragm Blades Type | circular |
| Aperture | 2.80 - 22.00 f |
| Notes | Optional lens hood: ES-52 |
| Filter Size | 52 mm |
| Magnification Ratio | 0.18 x |
| Closest Focus | 0.3 m |
| Focus Details | AF/MF with STM (Stepping Motor Technology) |
| Length | 22.8 mm |
| Diaphragm Blades | 7 |
| APS Equivalent | 64mm |
| Focal Length | 40.00 mm |
| Image Circle | 35mm |
| Brand | Canon |
| Name | Canon EF 40mm ƒ/2.8 STM |
| Weight | 130 g |
| Type | Wide Prime ("Pancake") |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Zoom System | Add |
| Front Element Rotation | Add |