Canon PowerShot A2500 User Manual page 54

Choosing Subjects to Focus On (Tracking AF)
Shoot after choosing a subject to focus on as follows.
1
Choose [Tracking AF].
z z Follow the steps in "Changing the AF
Frame Mode" (=
[Tracking AF].
[
X X
screen.
2
Choose a subject to focus on.
z z Aim the camera so that [
desired subject.
z z
Press the shutter button halfway. [
changes to a blue [
the subject as the camera continues to
adjust the focus and exposure (Servo AF)
(=
X X If no subject is detected, [
displayed.
3
Shoot.
z z Press the shutter button all the way down
to shoot.
• [Servo AF] (= 54) is set to [On] and cannot be changed.
• Tracking may not be possible when subjects are too small or move
too rapidly, or when subject color or brightness matches that of the
background too closely.
• [AF-Point Zoom] on the [4] tab is not available.
• [e] and [u] are not available.
Still Images
53) to choose
] is displayed in the center of the
] is on the
]
□
], which follows
54).
] is
Center
One AF frame is displayed in the center. Effective for reliable focusing.
• A yellow AF frame is displayed with [
when you press the shutter button halfway. Note that AF-point
zooming (= 58) is not possible.
• To compose shots so that subjects are positioned at the edge or in a corner,
first aim the camera to capture the subject in an AF frame, and then hold
the shutter button halfway down. As you continue to hold the shutter button
halfway, recompose the shot as desired, and then press the shutter button all
the way down (Focus Lock).
Shooting with Servo AF
This mode helps avoid missing shots of subjects in motion, because the
camera continues to focus on the subject and adjust the exposure as long
as you press the shutter button halfway.
1
Configure the setting.
z z Press the <n> button, choose
[Servo AF] on the [4] tab, and then
choose [On]
2
Focus.
z z The focus and exposure are maintained
where the blue AF frame is displayed
while you are pressing the shutter button
halfway.
Cover
Still Images Movies
Preliminary Notes and
Legal Information
Contents:
Basic Operations
Basic Guide
] if the camera cannot focus
Advanced Guide
1
2
3
4
Still Images
5
6
7
8
Index
(= 26).
Camera Basics
Smart Auto
Mode
Other Shooting
Modes
P Mode
Playback Mode
Setting Menu
Accessories
Appendix
54