" http://www.amazon.com/gp/product/B000YYDEQ4?tag=httpblogtrave-20
Fast F28 maximum aperture making it ideal for low light photography
l Minimum focusing distance of 135cm and a maximum magnification of 16
Equisolid angle projection method is possible for art and scientific use
Equipped with HSM with full-time manual focus override
Sigma 4.5mm f/2.8 EX DC HSM Circular Fisheye Lens for Nikon Digital SLR Cameras"
