Autofocus fine tune vs Real world results?

Camera Fun

Senior Member
After fine-tuning my 18-105 over time (first a target/angled ruler and then the dot-tune method), I ended up with an overall setting a -7. However, I noticed some recent general photos weren't quite as sharp as I had hoped and it appeared that I had adjusted the focus too much. So I decided to try the dot-tune again today for more focal lengths (did not change distance to target due to space limitations) and got the following results.
18mm -1.5
24mm -2.5
35mm -5.5
50mm -7.5
70mm -6.5
105mm -7.5

Even though the longer focal focal lengths show a -7 would be appropriate, those were the primary lengths I felt weren't sharp at the focus point. So I'm going to try -5 and -6 settings when I can to see what happens.

Has anyone else felt there were any differences between what a focus tuning produced and how their photos turned out?
 
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