30
NG
Special Article
Requirements for sharply focused photos
2
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
A case of the focus shifting to
the background
It is difficult to track an extremely fast
subject with just one of 45 points.
While shooting continuously, as
the AF point separated from the
subject, during one frame the
focus shifted to the background.