AF tunning what actually happens?????

Started 11 months ago | Discussions thread
AZ Steve
Regular MemberPosts: 127
Re: To understand better - or maybe worse
In reply to mironv, 11 months ago

The aperture blades, to be sure, are wide open when PDAF occurs.  Marianne contends that the effective light cone used by the AF sensors is stopped down to an effective f/5.6.  It is a very, very different thing!

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