The Mitakon Speedmaster 65mm f1.4 Gives the Fujifilm GFX a 51mm f1.1 Equivalent Lens

I've absolutely never understood why some folks (and they indeed do) say that the Fujifilm GFX system doesn't need faster lenses than f2, but the Mitakon Speedmaster 65mm f1. 4 is offering that to the system for only $799.