| Year | 1975 |
| Lens Groups | 6 |
| Lens Element | 8 |
| Aperature Blades | 8 |
| Minimum Aperture | f/16 |
| Closest Focusing | 0.6 m |
| Max. Magnifcation | 1:9.1 (0.11x) |
| Filter Size | 58 mm |
| Diameter x Length | 75.8 x 55 mm |
| Weight | 575 gr (1.27 lb) |
| Hood | BS-58 |
I tested this lens with the nFD 50/1.4 and nFD 50/1.2L;
Read part 1 of my full review here: http://www.jeroenterlingen.com/blog/2015/7/19/canon-fd-50mm-lens-comparison
And part 2: http://www.jeroenterlingen.com/blog/2015/8/26/canon-fd-5055mm-lens-comparison-part-2
This is the lens to own if you're looking for a 50mm lens (or 55mm in this case) that delivers excellent image quality wide-open. Compared to traditional spherical element lenses, aspherical elements, as used in this lens, result in markedly reduced spherical aberration and coma especially wide-open. The difference is not theoretical either, an image taken at F1.2 with this lens is much sharper and with more contrast than other 50mm lenses. Only downside with this lens is that it's big and heavy (though build quality is superb). For color shooters, note that that this lens is on the warm side.