19
AF point expansion expanded by 1 point on left and right is effective for horizontal movement
EF300mm f/2.8L IS USM 1/2000 sec. f/2.8 ISO100
For illustrative purposes, all AF points are displayed superimposed. The blue assist AF points are for illustrative purposes only, and they do not actually light up in blue.
Option 1: Expanding 1
point on left and right
is effective for sports
like tennis characterized
by active horizontal
m o v e m e n t . S u d d e n
horizontal movement
will be dealt with by
the AF points included
in the area expansion.