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Mr. Higgzbuffonton
!!Xsltv1VWxZT
Far as I know--
What happens is that there are things that are out of focus (since its not a wall of in focus and not, but a gradual loss of focus through the depth of field [in both directions off of where you focus, though more behind than in front]) that still appear sharp.
Now, depending on size of picture, viewing distance, sensor size, and some other shit, there is an acceptable size of each point that would still have it considered sharp and in focus..
The size of each point, btw, is from the light rays converging which is what the lens does..
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