Headline - DSLRs have imprecise focusing due to their mirrors

Started Apr 5, 2014 | Discussions thread
WilbaW
WilbaW Forum Pro • Posts: 11,387
Re: Closed vs open loop focusing

stevo23 wrote:

Martin.au wrote:

Both are closed loop. You can test it by starting the focus on a subject, then quickly moving the subject during the focus group's movement, and seeing if it focused on the background, or on the spot where the subject was.

Agreed. Open loop PDAF has been gone for 10 years or so.

PD AF has never been open-loop, see Busted! The Myth of Open-loop Phase-detection Autofocus.

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