Canon EOS 80D (W), Instruction Manual

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3
Custom Function Settings
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416
C.Fn II: Autofocus
C.Fn II -1 Tracking sensitivity
Sets the subject-tracking sensitivity during
AI Servo AF when an obstacle cuts across
the AF points or when the AF points stray
from the subject.
0: Default setting suited for most subjects. Suitable for moving
subjects in general.
Locked on: -2 / Locked on: -1
The camera will try to continue focusing on the subject even if an
obstacle cuts across the AF points or if the subject strays from the
AF points. The -2 setting makes the camera keep tracking the
target subject longer than the -1 setting.
However, if the camera focuses on a wrong subject, it may take
slightly longer to switch and focus on the target subject.
Responsive: +2 / Resp1
The camera can focus consecutively on subjects at different
distances that are covered by the AF points. Also effective when
you want to always focus on the closest subject. The +2 setting is
more responsive than the +1 setting when focusing on the next
subject.
However, the camera will be more prone to focus on an
unintended subject.
[ Tracking sensitivity ] is the feature named [ AI Servo tracking sensitivity ]
in the EOS-1D Mark III/IV, EOS-1Ds Mark III, and EOS 7D.