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125
AF Area Selection Modes
The Area AF frame (entire AF area) is used to focus.
This mode is set
automatically in Basic Zone modes
(except <
8
:
x
> and <
v
:
Xc
>).
The AF point(s) achieving focus is displayed as <
S
>.
With One-Shot AF, pressing the shutter button
halfway will display the AF point(s) <
S
> that
achieved focus. If multiple AF points are
displayed, it means they all have achieved focus.
This mode tends to focus on the nearest subject.
With AI Servo AF, you can set the AI Servo AF’s
starting position with [
8
C.Fn II-11:
Initial AFpt,
o
AI Servo AF
] (p.422). As long as the Area AF
frame can track the subject during shooting,
focusing will continue.
o 45-point Automatic Selection AF
When AI Servo AF mode is set with 45-point automatic selection AF,
Large Zone AF, or Zone AF, the active AF point <S> will keep switching
to track the subject. However, under certain shooting conditions (such as
when the subject is small), it may not be able to track the subject.
If a peripheral AF point or a wide-angle lens is used, achieving focus may
be difficult with an EOS-dedicated, external Speedlite’s AF-assist beam.
In such a case, use an AF point closer to the center.
When the AF point(s) light up, part or all of the viewfinder may light up in
red. This is a characteristic of AF point display.
In low temperatures, the AF point’s display may be difficult to see. This is
a characteristic of AF point display. Also, the tracking response may
become slower.
With [8C.Fn II -10: Orientation linked AF point], you can set the AF area
selection mode + AF point, or only the AF point separately for the horizontal
and vertical orientations (p.421).
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