Canon EOS-1D X Af Setting Manualbook page 21

or quickly refocus on new subjects
obstacles appear) or for instant response when new subjects appear
With the AF Configuration Tool on the EOS-1D
X, not only can you select from Case 1-Case 6,
but three different aspects of AI Servo AF
control for each can be adjusted individually.
[Tracking sensitivity] addresses how quickly
the AF system will try to refocus on a new
subject when you're focus-tracking an original
subject and there's a sudden change.
The [Locked on: -2/-1] setting delays AF
from switching to a sudden new subject and
continues to focus on the original subject .
Selecting [-2] results in the targeted subject
being tracked for a longer time before focus
changes to a new subject now in the AF point.
The [Responsive: +1/+2] setting speeds up
the process of refocusing on a new subject with
AI Servo AF. It's also effective when you want to
quickly focus on subjects that are hidden and
appear suddenly.
An example where
[Responsive: +1/+2] is
effective
When you want to focus on a
subject that will appear suddenly
in the frame.
Example where a skateboarder appeared
suddenly from the far wall. In a situation
like this, setting to [Responsive: +1/+2]
makes it possible to focus even more
quickly on the skater who just appeared.
(Photo top left, shown to illustrate scene
prior to the skateboarder appearing.)
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