Nikon released a new firmware update for Nikon Z7 II, Z6 II & Z5 mirrorless cameras. You can follow the links below to download the firmware updates:

The firmware update addressed a problem wherein users were hearing a loud noise from the aperture mechanism when the zoom or focus rings, featured on the F-mount lenses, were rotated. The problem occurred in rare circumstances, when F-mount lenses were connected via an FTZ mount adapter.
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