Long-time NR contributor Dariusz Breś (see his previous posts) did a quick autofocus speed test of the Nikon AF-S NIKKOR 300mm f/2.8G ED VR II lens for F-mount attached via the FTZ adapter to the Nikon Z6 II and then to the Nikon Z9 cameras. The result is visually obvious – the Nikon Z9 focuses significantly faster compared to the Z6 II. Similar results were observed also with other lenses:
“It looks like the lenses attached by the FTZ2 on the Nikon Z 9 are at full speed. I checked it with the Nikkors and the Sigmas. The difference is quite significant. In the movie Nikkor 300 2.8 VR + Z 6II and Z 9. I also checked the Z 7II and it performs the same as the Z 6II. Where does such a difference in engine operation come from? The Z 9 has a faster matrix and processor, I think that’s the reason. Does it matter in practice? in fast action, yes, because even when the lens loses the object, it can return quickly. In ordinary photography it does not matter.”
Via dariuszbres.pl