The IRIX 11mm f/4 lens for Nikon F-mount is now up to $125 off only at Adorama:
Additional information on the Irix 11mm f/4 lens, including press release, MTF charts and specifications can be found here and here.
Irix lenses are sold also at B&H, Amazon US, Amazon UK, Amazon DE, Amazon FR, Amazon IT and Amazon CA.
