| Focal Length | 12mm |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Lens Mount | Canon EF |
| Lens Format Coverage | Full-Frame |
| Angle of View | 180° |
| Minimum Focus Distance | 7.9" / 20.07 cm |
| Optical Design | 12 Elements in 8 Groups |
| Diaphragm Blades | 7 |
| Focus Type | Manual Focus |
| Image Stabilization | No |
| Filter Size | No |
| Dimensions (ø x L) | 3.04 x 2.86" / 77.3 x 72.7 mm |
| Weight | 18.17 oz / 515 g |
| Package Weight | 1.6 lb |
| Box Dimensions (LxWxH) | 6.7 x 5.2 x 5.1" |