Canon EOS Rebel T7i Kit 业主指南

3

 Focusing with AF

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

Subject with low-contrast such as the blue sky, solid-color flat 
surfaces or when highlight or shadow details are clipped.

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Subjects in low light.

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Stripes and other patterns where there is contrast only in the 
horizontal direction.

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Subjects with repetitive patterns (Example: Skyscraper windows, 
computer keyboards, etc.).

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Fine lines and subject outlines.

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Under a light source whose brightness, color, or pattern keeps 
changing.



Night scenes or points of light.



The image flickers under fluorescent or LED lighting.

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Extremely small subjects.

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Subjects at the edge of the screen.



Strongly backlit or reflective subjects (Example: Car with a highly 
reflective body, etc.).



Near and distant subjects covered by an AF point (Example: Animal 
in a cage, etc.).



Subjects that keep moving within the AF point and will not stay still 
due to camera shake or subject blur.



Performing AF when the subject is very far out of focus.

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Soft focus effect is applied with a soft focus lens.



A special effect filter is used.



Noise (dots of light, banding, etc.) appears on the screen during AF.