When Autofocus Fails (Manual Focusing) - Canon EOS Rebel T2 SERIES' EOS 300X SERIES Instruction Manual

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.
? Manual Focusing
Focus ring
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.
1 Set the lens focus mode switch
MF
to < >.
2 Focus the subject.
•
Focus by turning the lens focusing
ring until the subject is in focus in
the viewfinder.
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