Canon EOS 5D Mark III Manual Book page 6

AF Configuration Tool [Presets]
Continue to focus-track even when the subject
momentarily moves from the AF points
Effective when shooting scenes with fast moving subjects, or when an obstacle
momentarily appears in front of the subject tarily appears in front of the subject
Parameter default settings
Subject tracking sensitivity [-1]
Accelerate / decelerate Tracking [0]
AF point auto switching [0]
1 2
Case 2 is an effective setting for shooting fast
moving subjects when they 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
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Case2
Example of a fast
moving subject
where the focus
h a s s h i f t e d t o
the background
( p h o t o 2 ) . B y
selecting Case 2
for situations like
t h i s , i t w i l l b e
easier to fo cus
track the subject.
(resulting in an out of focus subject), similarly
when an obstacle obscures the subject, focus
can shift to the obstacle. By selecting Case 2 in
situations like these, focus will attempt to
continue to track the desired subject. When a
subject moves away from the AF points for an
extended period (such as swimmers doing the
butterfly stroke, or sports where the subject is
hidden for intervals), even better performance
may be achieved by manually setting the
[Tracking sensitivity] parameter to [-2].
Tr y selec ting Case 2 when
shooting a tennis player with
fast side to side movement.
The subject will be tracked
even when they move away
from the AF points.
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