Nikon Z9 - Releases Firmware Updates v5.31

Firmware update v5.31 for the Nikon Z9 addresses a specific but important autofocus issue: it fixes a bug where the focus point could drift away from the subject immediately after starting tracking, in both 3D tracking mode (still photography) and subject tracking AF (video). This fix improves the reliability of the autofocus system in fast or unpredictable motion situations.