What you want to do is create a shallow depth of field, this is to make your background blur and focus more on the subject. Set a large aperture, which is a low f-number, around f/1.8 or f/2 and then take a few test shots to see if this is what you would like. If you want everything to be focused in frame just do the opposite.
Where are the statements so i may help you
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It changed computing, because that was the first computer, and it was programmed by a woman
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