Shooting Problem Subjects For The Autofocus - Canon PowerShot Pro 90 IS Software Starter Manual

Shooting Problem Subjects for the Autofocus

The autofocus may not work well on the following types of subject.
- Subjects with extremely low contrast to the surroundings
- Subjects mixing close and far objects
- Subjects with extremely bright objects at the center of the composition
- Subjects that are moving quickly
To shoot these subjects, first aim the camera at an object at a similar distance, lock the
focus and recompose the image with the desired subject, or use the manual focus.
• When shooting through glass, approach as closely as possible to avoid reflections
off the glass.
Shooting with Focus Lock
Focus Lock Method 1
Aim the center of the LCD monitor or viewfinder at an object
1
at a similar distance to the subject you wish to shoot.
Press the shutter button halfway to lock the focus.
2
• The AE setting will also lock when you do this. The exposure may occasionally
be incorrect if the difference between the two items is too great. Use method 2
or the AE lock procedure when this happens.
3 Keep it pressed while you recompose and press the shutter
button all the way to shoot the image.
Focus Lock Method 2
Aim the center of the LCD monitor or viewfinder at an object
1
at a similar distance to the subject you wish to shoot.
Press the shutter button halfway to lock the focus. Keep it
2
pressed and press the
• The icon will appear in the display panel, and the
monitor or viewfinder.
• The focus setting will lock even if the shutter button and MF button are released.
• The manual focus setting will cancel if the MF button is pressed again.
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Shooting - Selecting Particular Effects
button.
icon in the LCD