| Year | 1975 |
| Lens Groups | 5 |
| Lens Element | 6 |
| Aperature Blades | 9 |
| Minimum Aperture | f/22 |
| Closest Focusing | 3.5 m |
| Max. Magnifcation | 1:10 (0.1x) |
| Filter Size | - |
| Diameter x Length | 112 x 230 mm |
| Weight | 1900 gr (4.19 lb) |
| Hood | - |
This lens is wonderfully sharp at all apertures and free from chromatic aberration. Minimum focus distance is not quite as good as in the subsequent L version, and the SSC fluorite lacks internal focusing, so it requires more work to track moving subjects. On the other hand, it's a tad less heavy than the L version and the long turning action of the focus ring allows you to set focus extremely precisely, I especially love to use this lens on tripod for prefocused closeups of small wildlife with some macro extension.