| Year | 1958 |
| Lens Groups | 4 |
| Lens Element | 6 |
| Aperature Blades | 13 |
| Minimum Aperture | f/22 |
| Closest Focusing | 1.5 m |
| Max. Magnifcation | 1:11.1 (0.09x) * |
| Filter Size | 58 mm |
| Diameter x Length | 64.5 x 77.2 |
| Weight | 500 gr (1.1 lb) |
| Hood | - |
| Beefiness | 1.98 |
Photos tagged for the Canon 135mm f/2.5 M in the Canon Classics Flickr Group.