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Set up steps

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lens AF stop 

button

depth-of-field

preview button

Utilizing the Switching AF area selection modes

Instantly switching AF area selection modes with a single button

Assigning the AF modes you want to switch is convenient using [Custom Controls]

Assigning functions

By assigning an [AF area selection mode] to a specific button in the [Custom Control] screen, you can continue shooting and switch 
AF areas instantly with the press of single button without having to move your eye from the viewfinder.

By pressing the 
assigned button

Examples of instantly switching AF area selection modes

Shooting the pit stop in motor sports 
for example. After shooting wide shots 
at the wide angle end of a zoom lens 
with [Single-point AF], quickly zoom 
in, and when targeting the driver's eye 
avoiding the helmet using [Spot AF].

From [Single-point AF] to [Spot AF]

On shooting with optional 'AF area 

selection mode'

Switchable into set 'AF area selection 

mode'

'Switch to registered AF functions' assigns.

An example is soccer etc. where the 
player appear s quite small in the 
viewfinder, then comes closer to fill 
the screen. In this case, by switching to 
[AF point expansion], it is possible to 
steadily track low contrast portions of 
the uniform even as it gets larger.

From [Single-point AF] to [AF point expansion]

Switching to [61-point automatic 
selection AF] is effective with figure 
skating where the skater comes from 
far away to fill up the screen as they 
approach. You can leave AF point 
s e l e c t i o n up to t h e c am e ra, an d 
concentrate on framing as you shoot.

From [AF point expansion] to [61-point automatic selection AF]

Buttons that can be assigned to switching 
AF area selection modes

[Switch to registered AF functions]

There are the two buttons that can be assign to switch AF 
functions. The 

 button and   button can be assigned with 

[Switch to registered AF functions].

Assign [Switch to registered AF functions] to the 

 

button or   button with [Custom Controls]. Press the 

 button on the assign function’s selection screen, 

and from various AF functions, select the [AF area 
selection mode], and select the mode that you want 
to use.

Assign to the 

 or 

depth of field 
preview button

Press the 

 button 

now

Select the [AF area 
selection mode]

AF area selection modes such as [Single-point 
AF] and [AF point expansion] are effective for 
switching according to the size and type of 
subjects. While looking through the viewfinder 
it can be difficult to change the mode while 
tracking the subject. However, by assigning the 
AF area selection modes you want to use, to 
specific buttons, you can switch instantly while 
continuing shooting. There four buttons that 
can be assigned. Think about the characteristics 

of the sports and subjects you want to shoot 
beforehand, and assign the AF area selection 
modes you think you will use. By assigning 
different modes to each of the four buttons, 
you can control up to four modes at will. In 
addition, aside from the AF area selection 
modes, various functions can be registered and 
applied, so by making settings as needed, you 
have the flexibility to handle conditions as they 
change.

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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