Canon Camera Eos 5d Mark Iii User Manual

71
f: Selecting the AF Mode N
This AF mode is suited for moving subjects when the focusing 
distance keeps changing. While you hold down the shutter button 
halfway, the subject will be focused continuously.
 The exposure is set at the moment the picture is taken.
 
When the AF area selection  mode is set to 61-point automatic selection (p.72), 
the camera first uses the manually-selected AF point to focus. During 
autofocusing, if the subject moves away  from the manually-selected AF point, 
focus...

72
61 AF points are provided for AF. You can select the AF point(s) suiting 
the scene or subject. Depending on the lens attached to the camera, the number of 
usable AF points and AF point pa tterns will differ. For details, 
see “Lenses and Usable AF Points” on page 79.
You can select one of six AF area selection modes. See the next page 
for the selection procedure.
Single-point Spot AF (Manual 
selection)
For pinpoint focusing.
Single-point AF (Manual 
selection)
Select one AF point to focus.
AF...

73
S Selecting the AF Area N
AF point expansion (Manual 
selection, surrounding points)
The manually-selected AF point < S> 
and the surrounding AF points < w> are 
used to focus.
Zone AF (Manual selection of 
zone)
The 61 AF points are divided into nine 
zones for focusing.
61-point automatic selection AF
All the AF points are used to focus.  This 
mode is set automatically in the < A> 
mode.
Select the AF area selection 
mode.
  Press the < S> button.
  Look through the viewfinder and 
press the < B>...

74
S Selecting the AF Area N
You can manually select the AF poin t or zone. With 61-point automatic 
selection AF, you can set the star ting AF point for AI Servo AF.
1Press the  button.
XThe 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.
2Select an AF point.
 The AF point select ion will change in the 
direction you tilt the . If you press 
<
9> straight...

75
Although this is the same as single-point AF, the 
selected AF point  covers a smaller area to 
focus. Effective for pinpoint focusing of 
overlapping subjects such  as an animal in a cage.
Since Spot AF covers a very small area, focusing 
may be difficult during han d-held shooting or for a 
moving subject.
Select one AF point < S> to be used for focusing.
The manually-selected AF point < S> and adjacent AF points < w> 
(above, below, on the left and on the  right) are used to focus. Effective 
when...

76
AF Area Selection ModesN
The manually-selected AF point < S> and adjacent AF points < w> are 
used to focus. The AF point expans ion is larger than with AF point 
expansion (Manual selection  ), so the focusing is executed over a 
wider area. Effective when it is diff icult to track a moving subject with 
just one AF point.
AI Servo AF and One-Shot  AF work in the same way as with AF point 
expansion (Manual selection  ) mode (p.75).
The 61 AF points are divided into ni ne zones for focusing. All the...

77
AF Area Selection ModesN
All the AF points are used to focus.  This mode is set automatically in the 
< A > mode.
With One-Shot AF, pressing the shutter button 
halfway will display the AF point(s) < S> that 
achieved focus. If multiple AF points are displayed, 
it means they all have achieved focus. This mode 
tends to focus the nearest subject.
With AI Servo AF, the manually-selected (p.74) AF 
point < S> is used first to achieve focus. The AF 
point(s) achieving focus is displayed as < S>.
61-point...

78
The camera’s AF sensor has 61 AF points. The illustration below shows 
the AF sensor pattern corresponding to each AF point. With f/2.8 or 
larger maximum aperture lenses, high-precision AF is possible at the 
viewfinder center.
Depending on the lens attached to the camera, the number of 
usable AF points and AF pattern will differ. For details, see pages 
79 to 84.
About the AF Sensor
The focusing sensor  is geared to obtain higher precision 
focusing with f/2.8 or larger  maximum aperture lenses. A...

79
Autofocusing with 61 points is possible. All of the AF area selection 
modes are selectable.
: Dual cross-type AF point. Subject tracking is superior and the focusing 
precision is higher than with other AF 
points.
: Cross-type AF point. Subject  tracking is superior and high-
precision focusing is achieved.
: AF points sensitive to horizontal  lines.
Lenses and Usable AF Points
Group A
  Although the camera  has 61 AF points, the number of usable AF 
points and focusing patt erns will differ...

80
Lenses and Usable AF Points
* Manual focus without tilt/shift.
Autofocusing with 61 points is possible. All of the AF area selection 
modes are selectable.
: Dual cross-type AF point. Subject tracking is superior and the focusing 
precision is higher than with other AF 
points.
: Cross-type AF point. Subject  tracking is superior and high-
precision focusing is achieved.
: AF points sensitive to horizontal  lines.
Autofocusing with 61 points is possibl e. All of the AF area selection 
modes are...