80Autofocus can fail to achieve focus (the focus confirmation light <o>blinks) with certain subjects such as the following:Subjects difficult to focusLow-contrast subjectsExample: Blue sky, solid-color walls, etc.Subjects in low lightExtremely backlit and reflective subjectsExample: Car with a reflective body, etc.Overlapping near and far objectsExample: Animal in a cage, etc.Repetitive patternsExample: Skyscraper windows, computer keyboards, etc.In such cases, do one of the following:(1) Focus an object at the same distance as the subject and lock thefocus before recomposing. (p.48)(2) Set the lens focus mode switch to <MF> and focus manually.1 Set the lens focus mode switch to.2 Focus the subject.Focus by turning the lens focusingring until the subject looks sharp inthe viewfinder.When Autofocus FailsManual FocusingIf you press the shutter button halfway during manual focusing, the activeAF point and the focus confirmation light <o> in the viewfinder will lightwhen focus is achieved.