Fuji’s 200/2 is an XF lens and as such has a too short flange focal for the GFX, so it’s a non-option. If you want a fast 200mm lens that is adaptable, look to Canon EF or Nikon F/G.
The Canon 200 f/2 and Leica Summicron R 180 are both quite nice on GFX sensors, if bokeh with high center sharpness/heavy vignette, or simply maximum light gathering is what you're looking for.
For those who don't have a Nikon 200/2, I have seen several reports that the new Laowa 200mm f/2 lens works well on a GFX body with a Fringer adapter. I have not tried it, but I am tempted.
Kyle Pope wrote:
Canon EF 200 1.8 works surprisingly well on the GFX100II with a fringer adapter... but it's a nightmare to carry.
I got one of those back in the early 1990s, with the original EOS 1 35mm film camera bodies (and the 17-35 and 80-200 f/2.8 lenses.) What a great lens, albeit stupid heavy and expensive. Kinda wish I hadn't sold it 25 years ago :-) but I needed the money.
