The Lens Adapter Nikon REFUSED to Build

[jknights]

I have one of these adapters for my Z cameras so I can use my older AF lenses.
The first release firmware v1.1 was not very good and only one of the 8 lenses I tested worked satisfactorily. I would not have recommended it to someone, but like most things in life 'Persistence pays'.

Latest v1.2 firmware sorted out the slightly missed focus problems I had previously and the lenses I tested now seem to focus well enough.

OK the purists will say....
It does not focus as fast as my AfS or Z lenses... 
Really, did you expect a 15-20 year old lens to beat the last year model? 
Sorry get real, it is about using the old optics to get a different image rather than the super sharp, contrasty clinical results from the latest lenses.
If you want then consider the FA-FZ1 as an expensive filter!

[jknights]

A very interesting discussion. Personally, the FTZ adapter that I think Nikon (or someone else) should make is one that supports AI metering. If the lens data has been set into the camera, an AI FTZ adaptor would allow the lens aperture to show in the viewfinder and to be recorded in EXIF data. I think that would be a very useful and desirable feature. I am sure there are plenty of photographers with legacy AI, AIS, and old AF lenses (including AF lenses which don't AF any more) who still like to use them on their Z cameras. The current lack of viewfinder information means you would constantly have to take your eye away from the viewfinder and over the top of the camera to see if the aperture has been set correctly, or turn the aperture ring to max and then count the clicks until the required aperture has been set, which slows down the picture taking process. This could mean you risk shoot at the wrong aperture or lose the shot. Having the shooting aperture in the EXIF data is also useful when reviewing images later.

An AI FTZ adapter would be much simpler and more robust than one which supports screwdrive AF, although more complex than the current adaptor. Not having AF with legacy lenses would not bother me so much as Z cameras have good tools such as focus peaking, increasing magnification, and IBIS which allow the photographer to focus quickly and accurately.

I believe that MonsterAdapter is building what they call a model LA-FZ11 adapter that might be of interest to you.   There seem to be rumours that it will make Ai lenses AF as well but this would be of little interest to me as my only non-AF lenses in the AI range is the 105mm f1.8 lens and 50mm f1.2.

Personally the LA-FZ1 that I have for my AF lenses works well enough for me on my Z cameras.