Canon EOS 5D Marc 3, Инструкция по эксплуатации

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Selecting AI Servo AF Characteristics (For a Subject) N
Tracking sensitivity
Sets the subject-tracking sensitivity
during AI Servo AF when an obstacle
enters the AF points or when the AF
points stray from the subject.
[ 0 ]
Standard setting suited for most moving subjects.
[ Locked on: -2 / Locked on: -1 ]
The camera will try to continue focusing the subject even if an
obstacle enters the AF points or if the subject strays from the AF
points. The -2 setting makes the camera track the target subject
longer than with the -1 setting.
However, if the camera focuses the wrong subject, it may take slightly
longer to switch and focus the target subject.
[ Responsive: +2 / Resp1 ]
Once an AF point tracks a subject, the camera can focus consecutive
subjects at different distances. Also effective when you want to
always focus on the closest subject. The +2 setting makes it quicker
to focus the next consecutive subject than with +1.
However, the camera will be more prone to focus on the wrong
subject.
About the Parameters
[ Tracking sensitivity ] is the feature named [ AI Servo tracking sensitivity ]
in the EOS-1D Mark III/IV, EOS-1Ds Mark III, and EOS 7D.
H111_EN.book Page 91 Tuesday, March 5, 2013 2:18 PM