Canon EOS 5D Mark IV L-series Zoom Lens Kit Owner's Manual

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You can easily fine-tune AI Servo AF to suit a particular subject or 
shooting scene just by selecting an option from case 1 to case 6. This 
feature is called the “AF Configuration Tool”.
1
Select the [21] tab.
2
Select a case.
 
Turn the <5> dial to select a case 
icon, then press <0>.
X
The selected case will be set. The 
selected case is indicated in blue.
As explained on pages 132 to 134, case 1 to 6 are six setting 
combinations of “Tracking sensitivity”, “Acceleration/deceleration 
tracking”, and “AF point auto switching”. Refer to the table below to 
select the case applicable to the subject or shooting scene.
3
 Selecting AI Servo AF CharacteristicsN
Case 1 to 6
Case
Icon
Description
Applicable Subjects
Page
Case 1
Versatile multi purpose 
setting
For any moving subject.
Case 2
Continue to track subjects, 
ignoring possible obstacles
Tennis players, butterfly 
swimmers, freestyle skiers, 
etc.
Case 3
Instantly focus on subjects 
suddenly entering AF 
points
Starting line of a bicycle 
race, alpine downhill skiers, 
etc.
Case 4
For subjects that 
accelerate or decelerate 
quickly
Soccer, motor sports, 
basketball, etc.
Case 5
For erratic subjects moving 
quickly in any direction
Figure skaters, etc.
Case 6
For subjects that change 
speed and move erratically
Rhythm gymnastics, etc.