Shooting With Servo Af; Choosing The Af Method - Canon PowerShot SX70 HS Advanced User's Manual

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Shooting with Servo AF

The camera may not be able to shoot while focusing, even if you press
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the shutter button all the way down. Keep holding down the shutter
button as you follow the subject.
Exposure is not locked in Servo AF mode when you press the shutter
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button halfway but is determined the moment you shoot.
Continuous shooting with auto focus is possible by specifying Servo AF.
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Note that continuous shooting is slower at this time.
Depending on the distance to the subject and the subject's speed, the
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camera may not be able to achieve correct focus.
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Choosing the AF Method

Focusing may take longer or be incorrect when subjects are dark or
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lack contrast, or in very bright conditions.
+Tracking
After you aim the camera at the subject, a white frame is displayed
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around the face of the main subject as determined by the camera.
If no faces are detected when you aim the camera at people, pressing
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the shutter button halfway displays green frames around other areas in
focus.
With the following subjects, faces may not be detected.
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- Subjects that are distant or extremely close
- Subjects that are dark or light
- Faces in profile, at an angle, or partly hidden
The camera may misinterpret non-human subjects as faces.
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Pressing the
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[ ] is shown around the face detected as the main subject. Press
the button again to switch the face frame [
face. Once you cycle through all detected faces, [Face select: Off] is
displayed and Face Select is canceled.
button displays [Face select: On], and a face frame
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] to another detected