The myth that focus-locking phase-detection autofocus is an open-loop control system is "Busted!" This article provides tests you can use to prove it is not only a closed-loop control system, but that it's fundamentally the same process as continuous-focus and always has been.
|The Colorado River and Henry Mountains, Utah by wam7|
from Through the port hole (aircraft)
|Lonesome Decay by Domenick Creaco|
from -Rain and the Empty Space: Wet Landscape- (in Full Colours Only)
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