photoman43 wrote:
Since you already have the FX version of the 800, use it on your Z9 with the adapter. It it gets the job done, cancel the order for the Z mount version. When the Z mount is available, rent it for a week or two and test it. Then make the decision as to which version you want to own going forward.
I have the z9 and the 500mm pf lens. I am not going to buy either z mount 400mm as I will just use my 500mm with the adapter. I did buy the z mount 100-400mm S lens.