Canon EOS 5D Mark III Instruction Manual (en)

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91
3
 Selecting AI Servo AF Characteristics (For a Subject)N
Geared for tracking moving subjects 
whose speed can change dramatically 
and suddenly. Also, if the target subject 
moves dramatically up, down, left or right 
and it is difficult to focus, the AF point 
switches automatically to track the 
subject.
This setting takes effect when the 
following AF area selection modes are 
set: AF point expansion (Manual 
selection 
), AF point expansion 
(Manual selection, surrounding points), 
Zone AF (Manual selection), 61-point 
automatic selection AF.
This setting is not available with the 
Single-point Spot AF (Manual 
selection) and Single-point AF 
(Manual selection) modes.
Case 6: For subjects that change speed and move erratically
Default settings
• Tracking sensitivity: [0]
• Accel./decel. tracking: [+1]
• AF pt auto switching: [+1]
 
If the moving subject suddenly and greatly changes speed, setting 
[Accel./decel. tracking] to [+2] may give better results (p.93).
 
If the subject moves erratically up, down, left, or right, setting [AF pt auto 
switching
] to [+2] may give better results (p.94).