I'm still on the fence with regard to the Z6/Z7. There's a lot of stuff I really like about these cameras, and ever since using the 1V1 I really wanted to have a more capable mirrorless camera. Even tried an Olympus 4/3 for a while that didn't really work for me as I'm too used to the Nikon UI and couldn't be bothered with the Olympus UI. So the Z6/Z7 seems like the answer, especially because it can take all my old AIS lenses via the FTZ adapter. I'm not even bothered about the lack of EXIF data when using the adapter (none of my old manual lenses are chipped). I'm not a pro, and if the EDIF data are missing on my shots I'm not too worried.
However, most of my current F mount lenses are DX. I also rely, at least to some extent, of the reach of the smaller sensor for wildlife photography. I know I can shoot the new Nikons in DX mode, however, with the Z6 (the model I'm most interested in) that would cut the resolution to ~10 megapixels. So I'd have to either get a couple of FX lenses or rely on my old AIS lenses.
That leads to my question: I've seen quite a few shots taken with AIS lenses - but how easy is it to focus them on the Z6? And how fast can you focus an old manual lens on the Z6/Z7? I find focussing my old lenses on my Nikon DSLRs pretty tedious as I find I can't really rely on the green dot, especially not in bad light.
The lenses I'm thinking of are my old longer lenses like the AIS 5.6/400 IF-ED, the 4.5/300 IF-ED and possibly the 5.6/600 IF-ED, but also the 4/105 Micro. I'd also use all my other old AIS lenses of course, like the 2/35mm, the 2,8/55mm micro and so on ... All these lenses have been sitting in my cupboard for years now, and getting a Nikon Z may give them a new lease of life. If the focusing is fast enough and reliable.
Hermann