Canon Camera Eos 5d Mark Iii User Manual

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3 Selecting AI Servo AF Characteristics (For a Subject) N
 Accel./decel. tracking
This sets the tracking sensitivity for 
moving subjects whose speed can 
suddenly change dramatically by starting 
or stopping suddenly, etc.
[0] Suited for subjects that move at a fixed speed.
[+2 / +1 ]
Effective for subjects hav ing sudden movements, sudden 
acceleration/deceleration, or sudden stops. Even if the moving 
subject’s speed suddenly changes  dramatically, the camera 
continues to focus the target  subject. For example, for an 
approaching subject, the camera  becomes less prone to focus 
behind it, which would result in a blurred subject. For a subject 
stopping suddenly, the camera beco mes less prone to focus in front 
of it. Setting +2 can track dramat ic changes in the moving subject’s 
speed better than with +1.
However, since the camera will  be sensitive to even slight 
movements of the subject, the focusing may be unstable 
momentarily.
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3 Selecting AI Servo AF Characteristics (For a Subject) N
 AF pt auto switching
This sets the switching sensitivity of the 
AF points as they track the subject 
moving dramatically up, down, left, or 
right.
This setting takes effect in the following 
AF area selection modes: AF point 
expansion (Manual selection  ), AF 
point expansion (Manual selection, 
surrounding points), Zone AF (Manual 
selection), 61-point automatic selection 
AF.
[0] Standard setting for gradual AF point switching.
[+2 / +1 ]
Even if the target subject moves dr amatically up, down, left, or right 
and moves away from the AF point,  the AF point switches to another 
one to continue focusing the subject.  The camera switches to the AF 
point deemed most likely to focus the subject based on the subject’s 
continual movement, contrast, et c. Setting +2 makes the camera 
more prone to switch the AF point than with +1.
However, with a wide-angle lens having  a wide depth of field or if the 
subject is too small in the frame, the camera may focus with the 
wrong AF point.
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3 Selecting AI Servo AF Characteristics (For a Subject) N
You can adjust each case’s three parameters (1. Tracking sensitivity, 2. 
Accel./decel. tracking, and 3. AF  pt auto switching) as desired.
1Select a case.
 Turn the < 5> dial to select the icon 
of the case you want to adjust.
2Press the < c> button.
 The selected case will have a purple 
frame.
3Select the desired item.
 Turn the < 5> dial to select a 
parameter, then press < 0>.
  When Tracking sensitivity is selected, 
the setting screen will appear.
4Make the adjustment.
 Turn the < 5> dial to adjust as 
desired, then press < 0>.
X The adjustment is saved.
  The default setting is indicated by the 
light gray [ C] mark.
5Exit the setting.
 To return to the screen in step 1, 
press the < c> button.
Changing Cases’ Parameter Settings
 In step 2, pressing the < L> button will reset the re spective case’s three 
parameters to their default settings.
  You can also register the 1, 2, an d 3 parameter settings to My Menu 
(p.331). Doing so w ill change the selected  case’s settings.
  When shooting with a ca se whose parameters you adjusted, select the 
adjusted case and then take the picture.
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With the [22] to [ 25] menu tabs, you 
can set the AF functions to suit your 
shooting style or subject.
You can set the AF operation characte ristics and shutter-release timing 
for the first shot during continuous shooting with AI Servo AF.
: Equal priority
Equal priority is given to focusing and 
shutter release.
: Release priority
Pressing the shutter button takes the 
picture immediately even if focus has not 
been achieved. This gives priority to 
getting the shot rather than achieving 
correct focus.
: Focus priority
Pressing the shutter button does not  take the picture until focus has 
been achieved. Effective when you want to achieve focus before 
capturing the shot.
3  Customizing AF Functions N
22: AI Servo
AI Servo 1st image priority
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3 Customizing AF Functions N
You can set the AF operation characte ristics and shutter-release timing 
during continuous shooting after t he first shot with AI Servo AF.
: Equal priority
Equal priority is given to focusing and 
continuous shooting speed. In low light 
or with low-contrast subjects, shooting 
speed may slow down.
: Shooting speed priority
Priority is given to the continuous shooting speed instead of achieving 
focus. The continuous shooting sp eed does not slow down. Convenient 
when you want to maintain  the continuous shooting speed.
: Focus priority
Priority is given to achieving focu s instead of the continuous shooting 
speed. The picture is not taken until focus is achieved. Effective when 
you want to achieve focus before capturing the shot.
AI Servo 2nd image priority
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3 Customizing AF Functions N
For the lenses below, which have an  electronic focusing ring, you can 
set whether to use the electronic focusing ring.
: Enable after One-Shot AF
After AF operates, if you keep pressing 
the shutter button, you can focus 
manually.
: Disable after One-Shot AF
After AF operates, manual focusing is 
disabled.
OFF: Disable in AF mode
When the lens’ focus mode switch is set to [ AF], manual focusing is 
disabled.
2 3: One Shot
USM lens electronic MF
EF50mm f/1.0L USM EF300mm  f/2.8L USM EF600mm f/4L USM
EF85mm f/1.2L USM EF400mm f/2.8 L USM EF1200mm f/5.6L USM
EF85mm f/1.2L II USM EF400mm f/2.8 L II USM EF28-80mm f/2.8-4L USM
EF200mm f/1.8L USM E F500mm f/4.5L USM
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3 Customizing AF Functions N
Enables or disables the EOS-dedi cated Speedlite’s AF-assist beam.
ON: Enable
The external Speedlite emits the AF-
assist beam when necessary.
OFF: Disable
The external Speedlite will not emit the 
AF-assist beam. This prevents the AF-
assist beam from disturbing others.
IR: IR AF assist beam only
Among external Speedlites, only models with an infrared AF-assist 
beam will be able to emit the beam. Set this if you do not want the AF 
assist to be emitted as small flashes.
You can set the AF operation characte ristics and shutter-release timing 
for One-Shot AF.
: Focus priority
The picture is not taken until focus is 
achieved. Effective when you want to 
achieve focus before capturing the shot.
: Release priority
Priority is given to taking the picture 
instead of achieving focus. This gives 
priority to getting the shot rather than 
achieving correct focus.
Note that the picture will be taken 
even if focus has not been achieved.
AF-assist beam firing
One-Shot AF release priority
If the external Speedlit e’s Custom Function [AF-assist beam firing ] is set to 
[ Disable ], this function’s setting will be  overridden and the AF-assist beam 
will not be emitted.
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3 Customizing AF Functions N
If focus cannot be achieved with aut ofocus, you can have the camera 
keep searching for the correct fo cus or have it stop searching.
ON: Continue focus search
If focus cannot be achieved with 
autofocus, the lens is driven to search for 
the correct focus.
OFF: Stop focus search
If autofocus starts and the focus is far off 
or if focus cannot be achieved, the lens 
drive stops. This prevents the lens from 
becoming grossly out of focus due to 
focus searching.
You can change the number of manually  selectable AF points. In the 
case of automatic AF point selection,  all 61 AF points will remain active 
regardless of this setting.
: 61 points
All 61 AF points will be manually 
selectable.
: Only cross-type AF points
Only cross-type AF points will be 
manually selectable. The number of 
selectable cross-type AF points will differ 
depending on the lens.
2 4
Lens drive when AF impossible
Selectable AF point
Super telephoto lenses ca n become grossly out of focus during continuous 
focus search, taking more time to ac hieve focus the next time. Therefore, 
setting [ Stop focus search ] is recommended for su per telephoto lenses.
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3 Customizing AF Functions N
: 15 points
Fifteen major AF points will be manually selectable.
: 9 points
Nine major AF points will be manually selectable.
You can limit the selectable AF area selection modes to suit your 
shooting preferences. Turn the < 5> dial to select a selection mode, 
then press < 0> to append a < X> checkmark. Then select [ OK] to 
register the setting.
: Manual select.:Spot AF
For pinpoint focusing with a narrower AF 
point than single-point AF.
: Manual selection:1 pt AF
One of the AF points set by [ Selectable 
AF point] setting can be selected.
: Expand AF area:
The camera will focus with the ma nually-selected AF point and the 
adjacent AF points (above, below, left and right).
: Expand AF area:Surround
The camera will focus with the ma nually-selected AF point and the 
surrounding AF points.
Select AF area selection mode
With a lens from groups F to H (p. 83, 84), the number of manually 
selectable AF points will be fewer.
  Even with settings other than [ 61 points], AF point expansion (Manual 
selection  ), AF point expansion (Man ual selection, surrounding points), 
and Zone AF (manual selectio n of Zone) are still possible. 
  When you press the  button, the AF points that are not manually 
selectable will not be displayed.
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3 Customizing AF Functions N
: Manual select.:Zone AF
The 61 AF points are divided into nine zones for focusing.
: Auto selection: 61 pt AF
All of the AF points are used for focusing.
You can set the method for changing the AF area selection mode.
  →  M-Fn button
After you press the < S> button, each 
time you press the < B> button, the 
AF area selection mode changes.
  →  Main Dial
After you press the < S> button, turning 
the < 6> dial changes the AF area 
selection mode.
AF area selection method
  The < X> mark cannot be deleted from [ Manual selection:1 pt AF].
  If the attached lens belongs to gr oup H (p.84), you can only select 
[ Manual select.:Spot AF ] and [Manual selection:1 pt AF].
When [   → Main Dial ] is set, use the < 9> to move the AF point 
horizontally.
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