Canon EOS-1D X Af Setting Manualbook page 10

AF Configuration Tool [Presets]
Continue to focus-track even if the subject momentarily
AI Servo AF maintains focus-tracking, even when sudden changes occur
Parameter default settings
• Subject tracking sensitivity
• Accelerate / decelerate Tracking
• AF point auto switching
1
Case 2 is an effective setting for shooting fast
moving subjects, which may move away from
the selected AF point or when obstacles may
momentarily obscure the subject. Sometimes
when the subject moves from the selected AF
point, focus can shift to the background
10
Case 2
[-1]
[0]
[0]
2
Example of a fast
m ov ing subj e c t ,
where the fo cus
has momentarily
s h i f t e d t o t h e
b a c k g r o u n d
( p h o t o 2 ) . B y
selec ting Case 2
for situations like
t h i s , A F i s l e s s
likely to be thrown
o f f b y s u d d e n
changes.
(resulting in an out of focus subject). Or, if
another subject or obstacle suddenly comes
between you and the subject, AF may refocus
o n t h e o b s t a c l e . B y s e l e c t i n g C a s e 2 i n
situations like these, the AF system will attempt
to continue to track the initial subject. When a