I love the Nikon 58mm 1.2 noct but found it almost impossible to manual focus on my D800. After buying a metabones Nikon G Ultra adapter I’ve now had a few weeks of shooting and seeing how the Nikon 58mm 1.2 Noct and Metabones Speed Booster ULTRA combination worked out.
When used with the X-T2 manual focussing engaged, this lens is incredibly eay to use. It puts the current Nikon bodies to shame.
There is a knack to getting teh best out of this lens – put the subject about 10 feet away with about another 20 feet of space behind them, and then the magic occurs.