Why Thom is wrong...

Started Sep 25, 2013 | Discussions thread
Erik Magnuson
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In reply to DT200, Sep 26, 2013

DT200 wrote:

Richard wrote:

When something comes out and is even better...

Auto Focus realities:. Phase-detection autofocus (even using still targets and center-point only) wasn’t nearly as accurate as contrast detection.

http://www.dpreview.com/news/2012/08/01/Roger-Cicala-Lensrentals-Canon-Autofocus-marketing-claims

And then goes on to say "Part two of the series showed that a few newer lenses did focus as accurately as contrast detection on 5D Mark III cameras"

Just like fast CDAF required lenses designed for it, more accurate PDAF needs system design tweaks as well.

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Erik

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