Canon REBEL Ti 300V Manual Do Utilizador
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 <
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
• 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
(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 Speedlite’s AF-assist
light, select the center AF point.
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 <
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.
until the subject is in focus in the
viewfinder.
NNN E SEC3 (31-51) 02.5.11 11:16 AM Page 34