| Year | 1971 |
| Lens Groups | 5 |
| Lens Element | 6 |
| Aperature Blades | 8 |
| Minimum Aperture | f/22 |
| Closest Focusing | 4 m |
| Max. Magnifcation | 1:11.1 (0.09x) |
| Filter Size | 58 mm |
| Diameter x Length | 70 x 173 |
| Weight | 1155 gr (2.55 lb) |
| Hood | - |
| Beefiness | 1.73 |
Photos tagged for the Canon FD 300mm f/5.6 in the Canon Classics Flickr Group.