Irix 11mm f4 REVIEW - The best ultra wide angle on the market?

I have recently had the chance to test a fantastic lens from IRIX, their 11mm f4 for full frame cameras, but just how well does it perform? Irix 11mm f4 Firefly - Irix 11mm f4 Blackstone - My Gear: Sony A7III - Sony 16-35 f4 - Sony 28mm f2 - Sony 55mm f1.8 - Sony 85mm f1.8 - Sony 70-200 f4 - Sony 10