| Sigma 8mm f/3.5 EX Fisheye Specifications | |
| Frame Coverage | 35mm (circular fisheye) |
| Lens Construction (groups) | 6 |
| Lens Construction (elements) | 11 |
| No. of Diaphragm Blades | 6 |
| Minimum Aperture | 22 |
| Closest Focusing Distance | 0.14m (5.3") |
| Maximum Magnifcation | 0.22x |
| Filter Diameter | N/A (rear gelatin filter) |
| Maximum Diameter x Length | 73.5mm x 68.6mm (2.9" x 2.7") |
| Weight | 400g (14oz) |
Reviews
Source
Shutterbug
While there’s no question that the Sigma 8mm f/3.5 lens changes your point of view, your decision is whether or not this $990 (MSRP; you might find it for less) lens is something you’d use often enough to justify the expenditure; if the answer is yes then the Sigma 8mm f/3.5 certainly delivers the goods.
Popular Photography
This unusual lens could make an enjoyable and, for pros, competitively significant addition to an optical arsenal. It visually distorts relative distance to put extra emphasis on a foreground subject, and its extreme barrel distortion makes rectilinear objects bow out as if they're ready to burst.
Photodo.com
For those needing this type of lens, for example when using software to create panoramics or for those involved in the scientific measurement of angles, where the output from this lens is quantifiable, this lens is an excellent tool.
