Shooting Problem Subjects For The Autofocus - Canon PowerShot S1 IS User Manual

Shooting Problem Subjects for the Autofocus

The autofocus may not work well on the
following types of subjects.
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
Subjects with horizontal stripes
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 manual focus or AF lock.
Shooting with Focus Lock
Mode Dial
1
1
Aim the AF frame at an object at a
similar distance to the subject you
wish to shoot.
2
Press the shutter button halfway to
lock the focus.
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 AF lock or AE lock when this
happens.
3
Keep it pressed while you
recompose the image and press the
shutter button all the way to shoot
the image.
2, 3
6. Shooting-Advanced Functions 93