Nikon Z AF-S Continuous focus resampling demonstration
Demonstration of how Nikon's AF-S focus mode on Z cameras doesn't actually focus just once and stop but instead continuously resamples focus of the target, akin to AF-C, likely as a measure to correct any potential lens movement imprecision or variance, in addition to other possible reasons. This behavior isn't unique to Nikon cameras - this "open loop" method of focus has been documented before, the seminal work being from a Dpreview member named WilbaW in his article "Busted! The Myth of Open-loop Phase-detection Autofocus", which can be read at https://www.dpreview.com/articles/540...
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