Hello Mr Aeschlimann

Yes, you can. However, only AF-S lenses come into question (for me) as otherwise the autofocus does not work. The Nikon Z6 does not have a rod drive for old lenses.

You can find the compatibility in the FTZ manual:

https://download.nikonimglib.com/archive4...

Kind regards
Tungsten74

Hello Mr. Aeschlimann
Actually, this question should be put to the manufacturer. I don't use a converter myself and have no experience with the Z6.
But: I assume that if you can attach any lens to the FTZ adapter, then the same applies to a converter.
Greetings, brihei