DotTune: Video Tutorial for AF tuning without photographs

Started Feb 18, 2013 | Discussions thread
Horshack
Veteran MemberPosts: 4,023
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Re: Is that true?
In reply to lock, Feb 21, 2013

lock wrote:

Are hardware-measured far and close edges of the in-focus range range the same as the far and close edges of the range of perceived acceptable sharpness ?

"When the circle of confusion becomes perceptible to our eyes, this region is said to be outside the depth of field and thus no longer "acceptably sharp." Are we now saying that AF sensors are affected by the same effects as our eyes ?

I'm not exactly certain where the peak AF phase alignment aligns within the front/fear DOF sphere, but I am pretty sure that the midpoint of the VF confirmation range aligns to where the PDAF system acquires focus, so the question is not specific to DotTune but to the PDAF system itself.

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