Key points

1. Front element

Typical of fisheye lenses, the front element protrudes from the barrel and precludes the fitment of a filter attachment thread.

2. Focus distance scale

The focus distance scale comes complete with depth of field markers, handy for manual zone focusing.

3. Glass and coatings

A quality-enhancing SLD (Special Low Dispersion) element is featured in the optical path, along with Sigma’s Super Multilayer Coating. Elements/groups: 11/6 Internal focus: Yes AF type: Ring-type ultrasonic Min focus distance: 0.135m Max magnification: 0.22x Filter thread: N/A Dimensions: 74x69mm Weight: 400g