One-shot af, Al servo af – Canon EOS A2E User Manual
Page 52
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One-shot AF
Use this
mode with stationary subjects. The
shutter wiii not reiease untii the subject is fo
cused.
Exposure
is
determined
when
the
subject
is
focused.
By
keeping
the
shutter
button
pressed
to
the
haifway
position,
the
focus
and
exposure
settings
remain
locked,
allowing
you
to
recompose
the
picture
as
desired.
• The shutter will not release if the in-focus
indicator is still blinking. Try refocusing the
subject at a different position or use ma
nual focusing (refer to page 31).
Al Servo AF
Use this mode when taking pictures of mov
ing
subjects.
The
lens
focuses
the
subject
continuously
with
the
selected
focusing
point while the shutter button is pressed half
way.
Al
Servo’s
predictive
focus
function*
can
track
subjects
moving
toward
or
away
from the camera. When the camera is set for
automatic
focusing
point
selection,
Al
Servo
AF operation is as follows —
29