Impressive little powerhouse.
This is my first mirrorless FX body. I have a D750, D600, and a D7000 and the electronics on this baby is in a different league. After a couple of weeks, I have just scratched the surface of the camera’s capabilities. I can honestly say that the Focus Peaking feature is outstanding. I have used the Z 40mm F2 that I purchased with the camera and its performance is overall very good. I also purchased the FTZII adapter with the camera. I have tested the Nikon AF-S 80-400 4.5-5.6G ED VR, and have found the auto focus to be just as fast as on my D750. The focus peaking is dead on with everything else I have used, including all of my D lenses including the AF 300mm F4D ED, 20-35 F2.8D, the 28-105 F3.5-4.5D/w macro, 180 F2.8D ED, all of my pre-D AF glass, and my Rokinon 14mm F2.8 ED AS IF UMC astrophotography lens. All focused perfectly with focus peaking. Checking with the 400% zoom feature confirms that it is right on. The in-body IBIS puts you into a different league. If you are switching over to a Z mount FX body, this camera is a no brainer. Your old F glass is very useable with the adapter.