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9-3
9
Focusing
☛ The shutter will not release if the in-focus indicator is blinking. Try refocusing on an
alternate subject with higher contrast at approximately the same distance, or use
manual focusing. (Refer to the section on “Difficult Subjects for Autofocus” later in
this chapter).
AI Servo AF
In Evaluative Metering mode, the
shutter speed and aperture value are
determined at this time, and by
keeping the Shutter button pressed
halfway, the focus and exposure
settings remain locked, allowing
you to recompose the picture as
desired.
Use this mode when capturing
images of moving subjects. The lens
focuses the subject continuously
while the Shutter button is pressed
halfway. AI Servo’s predictive focus
control can track subjects moving
toward or away from the camera.
Exposure is determined
immediately before the shutter is
released.
In AI Servo AF mode, the
viewfinder’s in-focus indicator does
not light up even when the subject is
in focus.
The in-focus indicator blinks if the
subject cannot be focused.
Focusing points In-focus indicator