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AF area selection modes 

Change the AF point selection to match your 

the shooting style

Choose whether only one AF point is used, or select from a vast array of AF selection options

The AF area selection 
modes make it possible 
to set how many of 
the 61-point AF are 
available to be used. 
S e t  t h e  s e l e c t i o n 
method of AF points 
that best matches 
t h e   s u b j e c t   a n d 
shooting conditions.

It is possible to 
focus on a very 
n a r r o w  a r e a s 
w i t h a s i n g l e 
manually selec-
ted point.

The default sett-
ing. With this mode 
it is possible to 
f o c u s   w i t h   a 
single manually 
selected point.

After pressing the 

S

 button, each time the 

 button is pressed, the [AF area selection 

mode] changes. By setting the menu [AF4] tab's [AF area selection method] to [

S

 -> Main 

Dial], after pressing the 

S

 button, you can switch the mode with the Main Dial if you 

prefer.

AF modes can be 
selected to match 
the subject and 
conditions

Single-point 
Spot AF

Single-point 
AF

Focus using one 
m a n u a l l y 
s el e c te d  p o int 
a s s i s t e d b y 4 
other AF points 
(up, down, left, 
and right).

Focus using one 
manually selected 
point assisted by 
the surrounding 
points.

AF point expansion 
(four surrounding 
points)

AF point expansion 
(eight surrounding 
points)

The 61 AF points 
are divided into 
nine zones, and 
f o c u s  i s  m a d e 
with the AF po-
int s in the sel -
ected zone.

All AF points are 
u s e d w i t h t hi s 
mode, and the 
camera selec t s 
and focuses auto-
matically.

Zone AF

61-point 
automatic 
selection AF

Using only one AF point

Press the 

S

 button

How to set the AF area selection mode

Using multiple AF points (zone)

The mode is changed each time the 

 button is pressed

The EOS 5D Mark III is equipped with 61-point 
AF. Not only can all these AF points each be 
selected individually, but by also automatic 
switching between multiple AF points to track 
the subject, using all 61 AF points. The [AF area 
selection mode] setting allows the selection of 
these AF point modes.
The two types of modes that you can manually 
select a single AF point to focus with are 
[Single-point Spot AF] and [Single-point AF]. 

The four modes that can switch automatically 
between multiple AF points to capture moving 
subjects are AF point expansion (Manual 
selection, 4 points [Up, down, left, and right]), 
A F  p o i n t  e x p a n s i o n  ( M a n u a l  s e l e c t i o n , 
surrounding 8 points), Zone AF, and Auto 
selection of 61 AF points (during AI Servo AF). 
Mode features are explained from P. 27 - 35, so 
you can select the mode best suited to your 
subject's characteristics and shooting scene.

There are six AF area selection modes to choose from

Single-point AF is an easy to use mode for still 
life photos etc. in One-shot AF

Single-point AF is a mode where one manually selected AF point is used to 
focus. For experienced photographers or when it is easy to track the subject 
with a single AF point, AI Servo AF can be utilized when continuously 
shooting moving subjects, however, this mode is more effective for shooting 
still life and landscapes with One-shot AF mode.

Summary of Contents for EOS 5D Mark III

Page 1: ...AF Setting Guidebook Detailed explanations of how to use the various high precision AF features...

Page 2: ...ement of cross type points used by the F 5 6 lenses Setting the AF Shutter release Characteristics 40 AF operation and shutter release timing settings Utilizing the AF 42 AF points can be set to switc...

Page 3: ...rvo Settings related to the camera priorities when using AI Servo AF The AF 2 tab includes settings related to cameras priority concerning shutter release timing when using AI Servo AF AI Servo 1st im...

Page 4: ...ets to match the characteristics of the type of subject and its movement and the shooting conditions can be selected from Case 1 Case 6 By simply selecting one of these cases settings for the AI Servo...

Page 5: ...ent sudden changes in speed and interruptions by obstacles AI Servo AF III overcomes these and is able to capture the subject Case 1 is the recommend setting to start shooting with Case 1 will provide...

Page 6: ...side to side movement The subject will be tracked even when they move away from the AF points Case 2 is an effective setting for shooting fast moving subjects when they move away from the selected AF...

Page 7: ...ons this setting can be extremely effective is when switching between different subjects you want to shoot for example at the start of a bicycle road race when you want to shoot continuously and switc...

Page 8: ...ons and it can be difficult for the AF system to judge accurately In these situations Case 4 is most effective With the Accelerate decelerate Tracking parameter set to 1 the AI Servo AF will work to f...

Page 9: ...atically switches to other AF points that contain the subject As a result even when the subject continuously leaves the selected AF point it is possible to increase the ratio of photos that are in foc...

Page 10: ...Therefore Case 6 is an effective setting for subjects that stop and start suddenly but also have erratic movement which could happen in any direction it works during Auto selection 61 point AF Zone AF...

Page 11: ...he Responsive 1 2 setting determines that subjects that come into the AF point are new subjects to be focused and quickly focuses It is also effective when you want to quickly focus on subjects that a...

Page 12: ...us accuracy Other parameters are the same so first try shooting with default settings then increase the setting to 1 and then 2 settings when more effective settings are desired Examples where the 0 s...

Page 13: ...subject Use the setting when you want the camera to automatically decide switch to use a new AF point and the 0 setting is used when you want to place emphasis on manually selected AF points to track...

Page 14: ...he camera selects and focuses auto matically Zone AF 61 point automatic selection AF Using only one AF point Press the S button How to set the AF area selection mode Using multiple AF points zone The...

Page 15: ...spot AF mode can be used to focus on a small area of the subject This option makes it possible to focus on the exact area even when there is an obstacle near the area you want to focus on A common ex...

Page 16: ...shooting subjects which might be difficult to determine movement select surrounding mode and when you want to focus on the area the covered by central manually selected AF point best to select the Up...

Page 17: ...ne focusing zones can be selected and the AF point is automatically selected from within that zone Zone AF differs from AF point expansion with it s manually selected AF point which AF tracking is bas...

Page 18: ...t position is selected for Single Point AF and then A F area is s witched to 61 Point Automatic Selection AF When using Auto selection of 61 AF points during AI Servo AF focusing will start from the m...

Page 19: ...II USM The colored AF points are for illustrative purpose only This does not represent the actual viewfinder display Up to 41 point cross type AF with f 4 lenses enabling superior tracking performance...

Page 20: ...ke use of the central 21 point cross type AF EF70 200mm f 4L IS USM EF100 400mm f 4 5 5 6L IS USM EF 17 40mm f 4 L USM EF70 300mm f 4 5 6L IS USM In Group C 41 point cross type AF points can be used w...

Page 21: ...t to shoot with a fixed interval between photos Shooting speed priority This setting gives priority to focusing on a subject and it cannot capture an image unless it is in focus It is recommended when...

Page 22: ...s shot was taken with the orientation option set so that when in the horizontal position the central AF point was set but when the grip is at the top in a vertical position the AF point is at the bott...

Page 23: ...ntal as well as the remembered AF point for orientation S h o o t i n g t h e s i d e to s i d e movement of tennis strokes After photographing the player positioned to the right side with a manually...

Page 24: ...n as they approach You can leave AF point selection up to the camera and concentrate on framing as you shoot From AF point expansion to 61 point automatic selection AF Buttons that can be assigned to...

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