| Year | 1975 |
| Lens Groups | 3 |
| Lens Element | 5 |
| Aperature Blades | 6 |
| Minimum Aperture | f/32 |
| Closest Focusing | 0.4 m |
| Max. Magnifcation | 1:2 (0.5x) |
| Filter Size | 55 mm |
| Diameter x Length | 67 x 112 mm |
| Weight | 530 gr (1.17 lb) |
| Hood | - |
This lens is SHARP!....Sharpest ever in the FD line-up I have used wide open at f4.The Good Thing is it is also Sharp at infinity even after being a macro lens.The sharpness Falls down after f11.f16 is good enough but anything higher is not good due to defraction.This lens also requires the FD50 extension tube for 1:1 macro.The aperture ring is SPRINGY....I don't know how to define it but maybe it's just my copy.This lens can also be used for portraits if you want which may require you to soften things up in post as the lens is Sharp and will show you the Skin pores if kept in focus well.... :D ...rnrnThe Extension tube can be very hard to find.Plus the length of the lens with extension and at 1:1 focus distance is more than 10 inches.....something to keep in mind....This lens does not have a tripod mount which it requires badly due to that length as it makes the camera unbalanced when on tripod.