Quick AF Animal Review - Nikon Z9 Firmware Update 2.1

Nikon announced the firmware version 2.1 for the Z9. I downloaded and updated the firmware and although I have not tested the High-Frequency Flicker Reduction mode, I was able to record a short video ( no tripod) testing the Eye-detection auto focus mode and subject tracking with the older Nikon 300mm F4 and definitely noticed improvement with AF and bird subject tracking. Thank You Nikon. Now waiting for the Nikon Z mount 200mm to 600mm lens.