Manual

Focusing Point Activation Area
C.Fn-17
C.Fn-17 can be set to expand the focusing point's activation area to include
more than one active focusing point, (-^p.108)
C.Fn-17-1
• C.Fn-17-1 Expanding the activation area to 7 points
Hp.108)
This larger activation area makes it easier to focus subjects moving
irregularly.
I : Selected focusing point.
□ : Focusing points in expanded
activation area.
The expanded focusing point
activation area is not displayed in the
viewfinder.
When focus is achieved in the One-
Shot AF mode, the selected focusing
point and the focusing point(s)
achieving focus will light.
• C.Fn-17-2 Expanding the activation area to 7 or 13 points
automatically (-^p.108)
As shown below, the focusing point activation area expands automatically
to 7 or 13 points depending on the lens focal length, AF mode, and the
subject's speed in the Al Servo AF mode. This is effective when the
subject's movement is unpredictable.
AF Mode
Lens Focal Length
Shorter than 300mm
300mm or Longer
One-Shot AF
The activation area does not
expand automatically.
00
V /
The activation area expands by
one point.
Al Servo AF
/ \ / 00 \
■ 1^
V / \ °° /
/ / ODDO \
□ DDBOD
\ DO / V OODO J
For a slow- For a fast-
moving subject moving subject
For a slow- For a fast-
moving subject moving subject
* To set the Custom Function, see “Selecting and Setting Custom
Functions” on page 96.
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