B&H is currently running a special on the Irix 11mm f/4 lenses for Nikon F-mount:
Additional coverage of the Irix 11mm f/4 lenses can be found here:
https://nikonrumors.com/2017/03/06/irix-11mm-f4-lens-additional-coverage-sample-photos-reviews.aspx/
Irix released Adobe Lightroom lens profiles for their 11mm f/4 and 15mm f/2.4 wide angle lenses
