 | |
| Maker | Sigma Corporation |
|---|---|
| Technical data | |
| Type | circular fisheye lens |
| Focal length | 8mm |
| Crop factor | 180 degrees |
| Aperture (max/min) | f/3.5 |
| Close focus distance | 13.5cm |
| Max. magnification | 1:4.6 |
| Diaphragm blades | 6 |
| Construction | 11 elements in 6 groups |
| Features | |
| Short back focus |  No |
| Ultrasonic motor |  No |
| Lens-based stabilization | No |
| Macro capable | No |
| Unique features | circular fisheye |
| Physical | |
| Max. length | 68.6mm |
| Diameter | 73.5mm |
| Weight | 400g (14.0oz) |
| Filter diameter | rear (Gelatin filter) |
| Accessories | |
| Lens hood | none |
| Angle of view | |
| Horizontal | 180 |
| Vertical | 180 |
| Diagonal | 180 |
| Retail info | |
| MSRP | $1230 USD |
The Sigma 8mm f/3.5 EX DG is a photographic lens introduced on 9 August 2006. It is a circular fisheye lens, designed to project a 180-degree field of view in all directions onto a circular image when used on a full-frame camera. The lens is available in Canon, Nikon, and Sigma mounts.
