| Year | 1975 |
| Lens Groups | 5 |
| Lens Element | 5 |
| Aperature Blades | 8 |
| Minimum Aperture | f/22 |
| Closest Focusing | 1.8 m |
| Max. Magnifcation | 1:6.7 (0.15x) |
| Filter Size | 72 mm |
| Diameter x Length | 78 x 140.5 mm |
| Weight | 700 gr (1.54 lb) |
| Hood | - |
I bought this great lens for just under $200 on eBay, which I found to be a great deal.
Granted, at first, I had only a cheap FD adapter with (image-destroying) glass for my 7D; I now have a temporary remedy (for IQ-sake), a cheap adapter without glass. Until, of course, Ed Mika finishes development on the mount conversion.
Having said that, the lens performs well in all areas, just stop it down to kill the CA.