| Year | 1973 |
| Lens Groups | 9 |
| Lens Element | 10 |
| Aperature Blades | 6 |
| Minimum Aperture | f/16 |
| Closest Focusing | 0.3 m |
| Max. Magnifcation | 1:17.9 (0.056x) |
| Filter Size | - |
| Diameter x Length | 76 x 60.5 mm |
| Weight | 485 gr (1.07 lb) |
| Hood | - |
Great built quality and very good image quality for this type of lens. As a full frame fiseye the lens requires care in use but will produce great images. Not an everyday lens but it has a place in the camera bag. The only downside (beyond the fact that it suffers from flair - not surprising given the front objective) is it's weight which means you don't just throw it in the bag on the off chance.
This fish - eye has high colour saturation, contrast, and is very sharp.
The DOF is enormous. It focuses down almost up to the front glass.
If used hyperfocally, you can make incredible close - ups with infinity still sharp.
When used in nature, with flowing contours, you often don't notice the fish - eye effect.
One of my favorite lenses.
dirk Dom.