Sigma 8mm f/4 EX DG Circular Fisheye - Sample Images
Info:
Introduced: 1999
Optical design: 10 elements in 6 groups
Lens mount: Canon EF, Nikon F, Pentax K, Sigma SA Bayonet, Sony/Minolta Alpha
Covers: Full-frame (24×36mm)
More info:
http://slrgear.com/reviews/showproduct.php/product/197
