One more real issue, of what I said about a year ago, here. 4 only screws on the lens mount are not enough. Nikon is mentioned this in its manuals - do not use big/heavy lenses handheld without proper support. My friend, shooting sport event, put his Z7/500/4 combo down on the hood. His assistant took it up in the fast manner, did not supporting the lens. Resulting was unusable images. Nikon service said that the body was deformed about 0.5mm, by loosing mount. They fixed, but out of warranty. Watch it, please, when put heavy lenses on your Z cameras. Good luck! LZ