Difficult subjects for EOS Digital SLR AF (Auto Focus).

Article ID: ART102859 | Date published: 05/11/2015 | Date last updated: 11/04/2015
 

Description

Difficult subjects for EOS Digital SLR AF (Auto Focus).

Solution

AF (Auto Focus) can fail to achieve focus (the focus confirmation light blinks) on certain subjects such as the following:
  • Low-contrast subjects. (ex. blue sky, solid-color walls)
  • Subjects in low light.
  • Extremely backlit reflective subjects. (ex. car with a reflective body)
  • Overlapping near and far objects. (ex. animal in a cage)
  • Low-contrast subjects. (ex. blue sky, solid-color walls)
  • Subjects in low light.
  • Extremely backlit reflective subjects. (ex. car with a reflective body)
  • Overlapping near and far objects. (ex. animal in a cage)
In such cases, do either of the following:
  • Focus on an object at the same distance as the subject and lock the focus before recomposing.
  • Set the lens focus mode switch to <MF> and focus manually.
  • Focus on an object at the same distance as the subject and lock the focus before recomposing.Set the lens focus mode switch to <MF> and focus manually.

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