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Special Article
Requirements for sharply focused photos
The area expansion setting is effective in cases
where the focus may easily shift to the background
EF400mm f/2.8L IS USM 1/2500 sec. f/4 ISO800
Shoot with a manually selected
single AF point
It is difficult to track an extremely fast
subject with just one of 45 points.
NG
A case of the focus shifting to
the background
While shooting continuously, as
the AF point separated from the
subject, during one frame the
focus shifted to the background.
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