Specifications for the EF 20mm f/2.8 USM
| Marketed |
June 1992 |
| Lens Construction (group) |
9 |
| Lens Construction (element) |
11 |
| No. of Diaphragm Blades |
5 |
| Minimum Aperture |
22 |
| Closest Focusing Distance (m) |
0.25 |
| Maximum Magnification (x) |
0.14 |
| Filter Diameter (mm) |
72 |
| Maximum Diameter x Length (mm) |
77.5 x 70.6 |
| Weight (g) |
405 |
Ultra-wide-angle lens for serious applications. Easy to hold and carry at 405 g. Floating rear focusing system. Sharp images are obtained at all subject distance.
