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