Canon EOS A2 - Page 22

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.
Predictive focus function
Predictive focus detects the distance and
speed of the subject and then predicts the sub-
ject position so that the subject will be sharply
focused the instant the exposure occurs. Shut-
ter release has priority over AF operation in
creative zone modes, and AF has priority in
image zone modes.
22
When the camera is set for automatic focus-
ing point selection in Al Servo mode, first
cover the subject with the center focusing
point and press the shutter button halfway to
focus the subject. After that, if the subject
moves away from the center focusing point
while the shutter button is still pressed half-
way, the camera automatically shifts to one of
the other focusing points and continues
tracking the subject.
© Exposure is determined immediately be-
fore the shutter is released.
e InAlServo AF mode, the in-focus indicator
does not function.
© Focus lock cannot be used in this mode.
Al Focus AF
This mode is active only when the command
dial is set to Full Auto ( © ) mode. The
camera automatically selects One-shot AF
or Al Servo AF depending on the subject.