Canon EOS Rebel T2 EOS Rebel T2 manual - Page 31

When Autofocus Fails Manual Focusing

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When Autofocus Fails (Manual Focusing) Autofocus can fail to achieve focus (the focus confirmation light blinks) with certain subjects such as the following: 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. • Subjects having a repetitive pattern. Example: Personal computer keyboard, windows on a building, etc. In such cases, do one of the following: (1) Focus lock an object at the same distance as the subject and recompose. (2) Set the lens focus mode switch to and focus manually. ? Manual Focusing 1 Set the lens focus mode switch to . 2 Focus the subject. • Focus by turning the lens focusing ring until the subject is in focus in the viewfinder. Focus ring If you hold down the shutter button halfway while focusing manually, the active AF point mark and the focus confirmation light will light when focus is achieved. 31

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31
When Autofocus Fails (Manual Focusing)
Autofocus can fail to achieve focus (the focus confirmation light
<
n
> blinks) with certain subjects such as the following:
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.
•
Subjects having a repetitive pattern.
Example: Personal computer keyboard, windows on a building, etc.
In such cases, do one of the following:
(1)
Focus lock an object at the same distance as the subject and
recompose.
(2)
Set the lens focus mode switch to <
MF
> and focus manually.
If you hold down the shutter button halfway while focusing
manually, the active AF point mark and the focus confirmation light
<
n
> will light when focus is achieved.
?
Manual Focusing
1
Set the lens focus mode switch
to <
MF
>.
2
Focus the subject.
•
Focus by turning the lens focusing
ring until the subject is in focus in
the viewfinder.
Focus ring