Canon EOS Rebel Ti Body Only Digital Camera User Manual


 
34
When Autofocus Fails
The camera has a high-precision AF system which can focus almost all
subjects. However, it can fail to achieve focus (the focus confirmation
light < > blinks) the subjects listed below.
Difficult Subjects for Autofocusing
Low-contrast subjects. Example: Blue sky, flat surface with a solid color.
Subjects in very low light.
Extremely backlit or reflective subjects. Example:Automobile with a
strong reflection.
Overlapping near and far objects. Example:Animal behind bars in a
cage.
In such cases, use one of the following methods to focus:
(1) Focus lock an object at the same distance as the subject and
recompose.
(2) Set the lens focus mode switch to <MF> or <M> and focus manually
as explained below.
If focus cannot be achieved even with the EOS-dedicated Speedlites AF-assist
light, select the center AF point.
If you hold down the shutter button halfway while focusing manually, the
active AF point will flash and the focus confirmation light < > will light when
focus is achieved.
Manual Focusing
1
Set the lens focus mode switch to
<
MF
> (or <
M
> on older lenses).
The < > icon will be displayed on
the LCD panel.
2
Focus the subject.
Turn the lens manual focusing ring
until the subject is in focus in the
viewfinder.
NNN E SEC3 (31-51) 02.5.11 11:16 AM Page 34