Difficult subjects for AF (Auto Focus) (EOS 5DS / EOS 5DS R)

18-พ.ค.-2015
8202601900

สารละลาย

    Autofocus can fail to achieve focus (viewfinder’s focus indicator [ ] blinks) with certain subjects such as the following:

    Subjects Difficult to Focus
    • Subjects with very low contrast
    (Example: Blue skies, solid-color flat surfaces, etc.)
    • Subjects in very low light
    • Strongly backlit or reflective subjects
    (Example: Cars with highly reflective bodies, etc.)
    • Near and distant subjects framed close to an AF point
    (Example: Animals in cages, etc.)
    • Subjects such as dots of light framed close to an AF point
    (Example: Night scenes, etc.)
    • Repetitive patterns
    (Example: Skyscraper windows, computer keyboards, etc.)

    In such cases, focus by doing either of the following:
    (1) With One-Shot AF, focus on an object at the same distance as the subject and lock the focus, then recompose the shot.
    (2) Set the lens’s focus mode switch to [MF] and focus manually.


    NOTE
    Depending on the subject, focus may be achieved by slightly recomposing the shot and performing AF operation again.

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