When Autofocus Fails

Autofocus can fail to achieve focus (the viewfinder’s focus confirmation light <o> blinks) with certain subjects such as the following:

Subjects difficult to focus

Very low-contrast subjects

(Example: Blue sky, solid-color walls, etc.) Subjects in very low light

Extremely backlit or reflective subjects (Example: Car with a highly reflective body, etc.) Near and far subjects covered by an AF point (Example: Animal in a cage, etc.)

Repetitive patterns

(Example: Skyscraper windows, computer keyboards, etc.)

In such cases, do either of the following:

(1)With One-Shot AF, focus on an object at the same distance as the subject and lock the focus before recomposing (p.67).

(2)Set the lens focus mode switch to <MF> and focus manually (p.109).

For conditions where AF can fail to achieve focus with [Live mode]/[uLive mode] during Live View shooting, see page 213.

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