| Sigma 8mm f/4 EX DG | |
| Maker: | Sigma Corporation |
| Feat-Special: | circular fisheye |
| Flength: | 8mm |
| Groups: | 6 |
| Elements: | 10 |
| Diaphragm: | 5 |
| Av-Horiz: | 180 |
| Av-Vert: | 180 |
| Av-Diag: | 180 |
| Filter: | rear (Gelatin filter) |
| Replace: | Sigma 8mm 3.5 EX DG |
The Sigma 8mm f/4 EX DG is a photographic lens made by the Sigma Corporation. It is a circular fisheye lens for full-frame cameras, and has been replaced by the Sigma 8mm 3.5 EX DG.