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FORUMS Photography Talk by Genre General Photography Talk 
Thread started 17 Dec 2016 (Saturday) 20:23
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Lens Focus Testing

 
Mathmans
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Dec 24, 2016 09:58 as a reply to  @ post 18222511 |  #31

Looks good to me.


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https://www.flickr.com​/photos/149610703@N05/ (external link)

  
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chauncey
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Dec 24, 2016 10:05 |  #32

You might be better using an etched metal ruler set at a 45 degree angle for a more precise exhibit.

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gjl711
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Dec 24, 2016 11:21 |  #33

chauncey wrote in post #18222555 (external link)
You might be better using an etched metal ruler set at a 45 degree angle for a more precise exhibit.

A ruler is good to judge if it's front or back focusing and to get a relative degree as well, but the focus target itself should be parallel to the sensor plane.
Google lens align and you'll find many home brew solutions (external link)


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Pagman
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Dec 24, 2016 18:29 |  #34

Mathmans wrote in post #18222549 (external link)
Looks good to me.


I think it conclusively proves the afma adjustment I did in camera has worked, and is now focusing in PDAF to about the same accuracy as live view CDAF.


P.


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Lens Focus Testing
FORUMS Photography Talk by Genre General Photography Talk 
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