| Year | - |
| Lens Groups | 7 |
| Lens Element | 8 |
| Aperature Blades | 8 |
| Minimum Aperture | f/22 |
| Closest Focusing | 0.39 m |
| Max. Magnifcation | 1:2 (0.5x) |
| Filter Size | 70 mm |
| Diameter x Length | 70 x 90 mm |
| Weight | 654 gr (1.44 lb) |
| Hood | - |
The example I own is made by Tokina. It's heavy, and should come with a seperate adapter that gives full 1:1 coverage. The build quality is extremely high, as is the optical performance. Combined with the fast 2.5 speed, and the probable low price, this is a steal of a lens.