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417
3
Custom Function Settings
N
C.Fn II -2 Acceleration/deceleration tracking
This sets the tracking sensitivity for moving
subjects whose speed can momentarily
change dramatically by starting or stopping
suddenly, etc.
0:
Suited for subjects that move at a steady speed (minor changes in
moving speed).
+2 / +1:
Effective for subjects having sudden movements, sudden
acceleration/deceleration, or sudden stops. Even if the moving
subject’s speed suddenly changes dramatically, the camera continues
to focus on the target subject. For example, for an approaching
subject, the camera becomes less prone to focus behind it to avoid
subject blur. For a subject stopping suddenly, the camera becomes
less prone to focus in front of it. Setting +2 can track dramatic changes
in the moving subject’s speed better than with +1.
However, since the camera will be sensitive to even slight movements
of the subject, the focusing may be unstable momentarily.
C.Fn II -3 AF point auto switching
This sets the switching sensitivity of the AF
points as they track the subject moving
dramatically up, down, left, or right.
This setting takes effect when the AF area
selection mode is set to Zone AF (manual
selection of zone), Large Zone AF (manual
selection of zone), or 45-point automatic
selection AF.
0:
Standard setting for gradual AF point switching.
+2 / +1:
Even if the target subject moves dramatically up, down, left, or right and
moves away from the AF point, the camera switches its focus to neighboring
AF points to continue focusing on the subject. The camera switches to the
AF point deemed most likely to focus on the subject based on the subject’s
continual movement, contrast, etc. Setting +2 makes the camera more prone
to switch the AF point than with +1.
However, with a wide-angle lens having a wide depth of field or if the subject
is too small in the frame, the camera may focus with the wrong AF point.
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