CANON M135mm f/2.5
| Marketed | July 1958 |
| Original Price | 53,000 yen |
| Lens Construction (group) | 4 |
| Lens Construction (element) | 6 |
| No. of Diaphragm Blades | 13 |
| Minimum Aperture | 22 |
| Closest Focusing Distance (m) | 1.5 |
| Maximum Magnifcation (x) | -- |
| Filter Diameter (mm) | 58 |
| Maximum Diameter x Length (mm) | 64.5 x 77.2 |
| Weight (g) | 500 |
