Canon 5D Mark III User Manual (en)

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 Selecting the AF AreaN
You can manually select the AF point or zone. With 61-point automatic 
selection AF, you can set the starting AF point for AI Servo AF.
1
Press the <S> button.
X
The AF points will be displayed in the 
viewfinder.
 
In AF point expansion modes, effective 
adjacent AF points will also be displayed.
 
In the Zone AF mode, the selected 
zone will be displayed.
2
Select an AF point.
 
The AF point selection will change in the 
direction you tilt the <
9>. If you press 
<
9> straight down, the center AF point 
(or center Zone) will be selected.
 
The <6> dial selects an AF point in the 
horizontal direction, and the <5> dial 
selects an AF point in the vertical direction.
 
In the Zone AF mode, turning the 
<6> or <5> dial will change the 
Zone in a looping sequence.
Pressing the <S> button lights up the AF points that are cross-type AF 
points for high-precision autofocusing. The blinking AF points are 
horizontal-line sensitive. For details, see page 78.
Selecting the AF Point Manually
AF Point Display Indications
 
When you press the <S> button, the LCD panel displays the following:
• 61-point automatic selection AF and Zone AF (manual selection of 
zone):  
AF
• Single-point Spot AF and Single-point AF: SEL  
 
(Center)/SEL AF 
(Off-center)
 
With [25: Manual AF pt. selec. pattern], you can set either [Stops at 
AF area edges
] or [Continuous] (p.102).