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<blockquote data-quote="Obir" data-source="post: 44220" data-attributes="member: 4928">I did not make an elaborate setup, but just made sure I had the camera on a tripod, lens wide open and a good subject with good contrast that is very well lit.&nbsp; Also used the fastest shutter speed possible that allowed good exposure with iso200.&nbsp; I took several shots by first focusing the lens manually to both ends (infinity and close-up) and having the camera auto-focus from there.&nbsp; There was a slight difference on the degree of &quot;back-focus&quot; between the shots taken starting from infinity and close-up.&nbsp; It was actually very easy to see when looking at the shots at 100% that the focus was just behind the intended point.I only did this for my 35mm.&nbsp; I've read that zoom lenses are a whole different ballgame so I've left my 18-105 alone for now.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /></blockquote>

[QUOTE="Obir, post: 44220, member: 4928"] I did not make an elaborate setup, but just made sure I had the camera on a tripod, lens wide open and a good subject with good contrast that is very well lit. Also used the fastest shutter speed possible that allowed good exposure with iso200. I took several shots by first focusing the lens manually to both ends (infinity and close-up) and having the camera auto-focus from there. There was a slight difference on the degree of "back-focus" between the shots taken starting from infinity and close-up. It was actually very easy to see when looking at the shots at 100% that the focus was just behind the intended point. I only did this for my 35mm. I've read that zoom lenses are a whole different ballgame so I've left my 18-105 alone for now.:) [/QUOTE]

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