| Focal Length | 400mm |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/32 |
| Lens Mount | Canon RF |
| Format Compatibility | Full-Frame |
| Angle of View | 6° |
| Minimum Focus Distance | 8.2' / 2.5 m |
| Maximum Magnification | 0.17x |
| Optical Design | 17 Elements in 13 Groups |
| Diaphragm Blades | 9 |
| Focus Type | Autofocus |
| Image Stabilization | Yes |
| Tripod Collar | Removable and Rotating |
| Filter Size | 55 mm (Drop-In) |
| Dimensions (ø x L) | 6.4 x 14.4" / 163 x 367 mm |
| Weight | 6.4 lb / 2.9 kg |