| Angle of view (horzntl, vertl, diagnl) | 27°-6°50', 18°11'-4°35', 32°11'-8°15' |
| Lens construction (elements/groups) | 13/9 |
| No. of diaphragm blades | 7 |
| Minimum aperture | 32 - 45 |
| Closest focusing distance (m) | 1.5 |
| Maximum magnification (x) | 0.25 (at 300mm) |
| AF actuator | Micro USM |
| Filter diameter (mm) | 58 |
| Max. diameter x length (mm) | 71 x 122 |
| Weight (g) | 480 |
| Magnification with Extension Tube | EF12 II: 0.31 - 0.04
EF25 II: 0.39 - 0.09 |
| Lens hood | ET-60 |
| Hard case | - |
| Soft case | LP1019 |